16秋《外贸英语函电》作业4
16秋《外贸英语函电》作业4
试卷总分：100 测试时间：-- 试卷得分：100
一、单选题（共20 道试题，共100 分。）得分：100
1. A confirmed, irrevocable letter of credit, covering the order for us $ 20,000 in their favour, was opened ( ) Until march
A. effectively
B. expiry
C. available
D. validity
答案:C
满分：5 分得分：5.0
2. The ship is scheduled to sail ( ) Hong Kong on the 23rd of this month.
A. to
B. for
C. in
D. by
答案:B
满分：5 分得分：5.0
3. We thank you for your letter of may 5th, ( ) your purchase from us of 5000 tons green beans.
A. confirm
B. to confirm
C. confirming
D. confirmed
答案:C
满分：5 分得分：5.0
4. He left her wife ( )a lot of money
A. By
B. On
C. With
D. After
答案:C
满分：5 分得分：5.0
5. We look forward to ( ) trial order.
A. receiving your
B. receive from you
C. receipt your
D. receipt
答案:A
外贸英语函电试卷B标准答案(1)
XXXXXXX卷面考核 XXXXXXX学年第 2 学期期末 《外贸英语函电》（ B ）标准答案 专业_班级经济命题教师 一、Fill in the blanks with the right word or words (2% for each, 20%) 1～5 C D B B B 6～10 B D C B B 二、Choose the appropriate word or words in the parentheses. (2% for each, 20%) 1～5 B A A B A 6～10 B A B A A 三、Translate the following sentences into Chinese.(3% for each, 15%) 1.从中国国际贸易促进委员会获悉，你们有意购买电器用品。 2.我们还想了解各类商品的每种颜色和花样的最低出口起售量。 3.所有报价以我方最后确认为准。除非另有规定或经双方同意，所有价格都是不含佣 金的净价。 4.另行寄上我方目录若干份，以便你方作出适当选择。 5.我方所报价格是经过紧密计算的。然而，为促进业务我们准备给你方5%的折扣。 四、Translate the following sentences into English.(3% for each, 15%) 1.We are one of the leading importers dealing in electronic products in the area, and take this opportunity to approach you in the hope of establishing business relations.
人教版九年级数学下册练习题及答案
人教版九年级数学下册练习题及答案 （2021最新版） 作者：______ 编写日期：2021年__月__日 【基础能力训练】一、全面调查、抽样调查的应用 1.要了解我校教师的工资收入情况，可以采取________方式进行调查.2.下列调查：(1)为了了解“TCL”和“长虹”两个牌子的彩电哪个在市场上更畅销，?李叔叔来到一家大型家电商场，观察30分钟里顾客购买彩电的情况.(2)为了了解学生们对新教材的意见，学校领导向每位使用新教材的学生发出一张意见证询表.______是使用全面调查方式，_______是采用抽样调查方式进行调查(?填序号即可).3.下列调查，适合用全面调查方法的是( ).A.了解一批炮弹的杀伤半径 B.了解湘潭市每天的流动人口数C.保证“神舟”6号载人飞船的成功发射; D.
要了解石家庄市居民的日平均用水量 4.下列问题采用哪种调查方式比较恰当?(1)想知道一锅汤的味道;(2)了解某海域海水的含盐量;(3)为了买校服，了解每个学生的衣服尺寸;(4)商检人员在某超市检查一种饮料的合格率.5.为了了解一批种子的发芽率，可采用的调查方式是______.6.下列问题用普查(即全面调查)较为合适的是( )A.调查北京某区中学生一周内上网的时间B.检验一批药品的治疗效果C.了解50位同学的视力情况D.检测一批地板砖的强度7.以下关于抽样调查的说法错误的是( )A.抽样调查的优点是调查的范围小，节省时间、人力、物力B.抽样调查的结果一般不如普查得到的结果准确C.抽样调查时被调查的对象不能太少 D.大样本一定能保证调查结果的准确性8.为了获得较为准确的调查结果，抽样时要注意样本的______和______.9.下列调查中，分别采用了哪种调查方式?(1)为了解你们班同学的身高，对全班同学进行调查.(2)为了解同学们对音乐、体育、美术的爱好情况，对所有学号是5和倍数的同学进行调查.二、总体、个体、样本、样本容量的应用10.北京火车站为了了解5月份每天上午乘车的人数，?抽查了其中一周每天上午乘车的人数，所抽查的这一周每天上午乘车的人数是这个问题的( )A.总体 B.个体 C.样本 D.样本容量11.下面几种说法正确的是( )A.样本中个体的数目叫总体B.考察对象的所有数目叫总体C.总体的一部分叫个体D.从总体中抽取的一部分个体叫总体的一个样本12.2006年某市有9 880名九年级毕业生参加中考，为了考察他们的数学成绩，评卷人员抽取50本试卷，对每本30名考生的数学成绩进行统计分析，在这个问题中正确
人教版九年级数学上册圆家庭作业题2016_题型归纳
人教版九年级数学上册圆家庭作业题2016_题型归纳 当一条线段绕着它的一个端点在平面内旋转一周时，它的另一个端点的轨迹叫做圆。查字典数学网小编为大家准备了这篇人教版九年级数学上册圆家庭作业题。 人教版九年级数学上册圆家庭作业题2016 一、填空(16分) 1.圆的位置是由( )确定的，圆的大小决定于( )的长短。 2.圆周率表示同一圆内( )和( )的倍数关系，它用字母( )表示，保留两位小数取近似值是( )。 3.在同一个圆内可以画( )条直径;如果用圆规画一个直径是10厘米的圆，圆规的两脚间的距离应该是( )厘米。 4.在长6厘米，宽4厘米的长方形内画一个最大的圆，这个圆的周长是( )，面积是( )。 5.一个圆环，外圆直径是6分米，圆环宽1分米，圆环的面积是( )。 6.甲圆直径长8厘米，是乙圆直径的40%。乙圆的周长是( )。 7.大圆的半径等于小圆直径，则大圆面积是小圆面积的( )倍，小圆周长是大圆周长的( )。 8.在一张长32厘米，宽16厘米的长方形内画半径是4厘米的圆，这样的圆最多能画( )个，这些圆的面积和是( )。 二、判断题。(8分) 1.圆的周长是它的直径的π倍。( ) 2.圆的直径扩大4倍，圆的面积也扩大4倍。( ) 3.半径为1厘米的圆的周长是3.14厘米。( ) 4.一个圆的周长是12.56厘米，面积是12.56平方厘米。( ) 5.圆的半径由6分米增加到9分米，圆的面积增加了45平方分米。( ) 6.圆内最长的线段是直径。( ) 7.圆是轴对称图形，它有无数条对称轴。( ) 8.半个圆的周长就是圆周长的一半。( ) 小编为大家提供的人教版九年级数学上册圆家庭作业题，大家仔细阅读了吗?最后祝同学们学习进步。
[北语]20春《外贸英语函电》作业4
20春《外贸英语函电》作业4 一、单选题 1.We hope you will see your way clear to September shipment. A.accept B.acceptance C.accepted D.accepting 正确答案：D 2.We are in possession of your letter of the 11th July , which we note that you have established the L/C in our favour. A.through B.of C.from D.by 正确答案：C 3.If you are prepared to increase your to 15, we shall be pleased to purchase the complete stock. A.sales volume B.price C.discount D.cost 正确答案：C 4.It is our foreign policy to trade with foreign countries on the basis of equality and mutual benefit. A.trade B.market C.deal D.business 正确答案：A 5.The letter we sent last is an enquiry color TV sets. A.of B.for C.as D.about 正确答案：B 6.Will you please quote us the following items A.with B.in C.for D.about 正确答案：C 7.The goods you delivered are below the standard we expected the sample.
外贸英语函电试卷及标准答案
外贸英语函电试卷及标准答案 最牛英语口语培训模式：躺在家里练口语，全程外教一对一，三个月畅谈无阻！太平洋英语，免费体验全部外教一对一课程：https://www.360docs.net/doc/1f17604440.html, 外贸英语函电试卷(A卷) Ⅰ.Translation of terms 术语翻译(10%)： A.Translate the following terms into Chinese 将下列术语译成汉语(5%)： 1．mediation of dispute 2．DEQ, Delivered Ex Quay 3．acts of God 4．continental bridge 5．exclusive sales B.Translate the following terms into English in full 将下列术语译成英语（请用全称）(5%)： 1．亚洲开发银行 2．电子商务认证 3．银行密押 4．机电产品 5．内包装 Ⅱ.Make the best choice for each of the following sentences 单项选择(20%)：（提示：请在各题所提供的四个选项中选择一个，并将所选中的答案相对应的选项字母填入句中横线上。） 1.The boxes must be strong enough to withstand transport ____ very bad roads. A. along B. for C. in D. over 2.Enclosed are two copies of our Sales Confirmation No. DTE0607 ____ out against your Order KK02736. A. got B. made
外贸英语函电作业
1.对这些商品他们尤其关心的是包装方式。 They are particularly concerned about the mode of packing for this kind of goods. 2.顺便问一下，你们接受中性包装吗？ By the way, do you accept neutral packing? 3.外包装应坚固，以适合运输。至于内包装，必须具有吸引力，以促进销售。The outer packing should be strong enough for the transportation. As for the inner packing, it must be attractive and helpful to the sales. 4.由于纸板箱相对来说轻便坚实，因此更便于装卸。 Since cartons are comparatively light and compact, they are more convinenet to handle in the course of loading and unloading. 5.我们相信，为防运输途中受损，你方会特别注意包装。 We trust that you will special care to the packing in order to avoid tha damage in transit. 6.我们高兴地通知你们，你方所订购的货物已备受待运。请通知包装及装运要 求。 We are glad to inform you that the goods you ordered are ready for shipment. Please let us have your instructions for packing and shipment.
外贸英语函电试卷及标准答案
外贸英语函电试卷及标准答案 1.Ⅱ.Make the best choice for each of the following sentences The boxes must be strong enough to withstand transport ____ very bad roads. A. Along B. For C. in D. over 2.Enclosed are two copies of our Sales Confirmation No. DTE0607 ____ out against your Order KK02736. A. Got B. Made C. put D. taken 3.Some customers requested us to ____ our price because they consider it too high. A. bring down B. get down C. put down D. take down 4.We can allow you a special discount of 2% on orders exceeding $60,000. The word “allow” can be replaced by the following words EXCEPT A. Give B. Grant C. offer D. permit 5.The consignment was shipped ____ on the S.S. “Changfeng” which left Shanghai for Singapore on June 16. A. Clean B. Cleaned C. cleaning D. cleanly 6.For your own ____ please expedite the L/C, which must reach us before August A. Advantage B. Benefit C. consideration D. profit 7.In the ____ we would ask you to dispatch the replacement to us as soon as possible. A. Meantime B. Meanwhile C. time D. occasion 8.This will enable us to arrange speedy passage through the Customs on ____ of the consignment. A. arrival B. Arriving C. reception D. receiving 9. A container holds 240 bicycles; the whole cargo would therefore comprise 5 containers, ____ 8 tons. A. and each weighing C. each weighing B. each to weigh D. each weighs 10.The cases should be ____ they can easily be made tightly closed again after being opened. A.as such so as C. of such a type that B.B. like this so that D. of such a type which 11.We deal in decorative fabrics ____ different varieties. A. On B. In C. of D. for 12.It is possible to extend this Letter of Credit, which expires ____ January 28. A. On B. in C. at D. for 13.We trust you will look ____ the matter without delay upon receiving the data concerning the damage. A. On B. Upon C. in D. into 14.Please quote us your lowest price ____ CIF Singapore basis for 1,500 pieces for early delivery.
初三数学家庭作业 锐角三角函数
初三数学家庭作业 第七章 锐角三角函数 本章复习 一、知识要点 1、在Rt △ABC 中，∠C ＝90°，BC ＝a ，AC ＝b ，AB ＝c ，则sinA ＝＿＿＿＿＿，cosA ＝＿＿＿＿＿＿，tanA ＝＿＿＿＿＿＿＿＿＿ 2、填表： 3、在Rt △ABC 中，∠C ＝90°，∠A 、∠B 、∠C 的对边分别为a 、b 、c ，则下列关系： （1）两个锐角的关系：＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿ （2）边的关系：＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿ （3）边与角的关系：＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿ 4、＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿叫做解直角三角形. 二、基础训练 1、如图，将三角板的直角顶点放置在直线AB 上的点O 处，使斜边CD ∥AB ，则∠α的余弦值为＿＿＿＿＿＿ 3、sin 260°＋cos 245°－tan45°＋cos30°·tan30°＝＿＿＿＿＿＿＿ 4、如图，飞机A 在目标B 的正上方1000m 处，飞行员测得地面目标C 的俯角为30°，则地面目标B 、C 之间的距离是＿＿＿＿＿m 5、升国旗时，某同学站在离旗杆底部24m 处行注目礼，当国旗升至旗杆顶端时，该同学的视线的仰角为30°，若两眼离地面1.5m ，则旗杆高度约为＿＿＿＿＿m （3≈1.732，精确到0.1m ） 6、如图，梯形ABCD 中，AD ∥BC ，AD ＝1，BC ＝4＋3，∠B ＝45°∠C ＝60°，则该梯形的高h ＝＿＿＿＿＿＿
8、tan30°的值等于（） 9、sin60°的值等于（） 10、在△ABC中，∠C＝90°，∠A、∠B、∠C的对边是a、b、c，那么（） A、b＝a·tanA B、b＝c·sinA C、a＝c·cosB D、c＝a·sinA 11、在Rt△ABC中，∠C＝90°，下列各式中正确的是（） A、sinA＝sinB B、tanA＝tanB C、sinA＝cosB D、cosA＝cosB 12、在平面直角坐标系中点A（sin30°，cos30°）在（） A、第一象限 B、第二象限 C、第三象限 D、第四象限 13、如图，在离地面高度5m处引拉线固定电线杆，拉线和地面成60°角，则拉线AC的长是（） 14、如图，要测量出旗杆顶端旗帜的宽度EF，需测出（） A、α、β B、α、β、AB C、α、β、B D、AC D、α、β、AB、AC 第13题第14题 16、在Rt△ABC中，∠C＝90°，∠A＝60°，∠A的平分线AM的长为15cm，求直角边
北语20春《外贸英语函电》作业1.doc
1.We are( ) in the import and export of chemicals. A.interesting B.interest C.of interest D.interested 【参考答案】: D 2.While we appreciate your order, ( ) we very much regret that we are unable to accept any fresh orders at present owing to heavy commitments. A.and B.but C.therefore D.nor 【参考答案】: B 3.We regret the need for you to write to us and hope the steps we are taking( ) the safe arrival of all your orders in future. A.ensure B.assure C.insure D.sure 【参考答案】: A 4.The good you enquire for are ( ) now A.Out B.Not stock C.Out stock D.Out of stock 【参考答案】: D 5.We shall( ) you again, as soon as we resume offering. A.contact with B.contact to C.contact D.contact by 【参考答案】: C 6.We cannot see any possibility of business( ) your price is too high.
外贸英语函电题库
《外经贸英语函电》试题库I. Translate the following terms into English 目录按照要求 订单实盘 市场经济虚盘 电子邮件汇票 询盘装运 报盘还盘 报价利润 信用证折扣 你处形式发票 供你参考一式两份 信誉以……为准 支付条款唛头 代理与……建立业务关系 确认保险费 即期索赔 投保保险单 电子商务装船通知 集装箱托收 汇付成交 检验证书已脱销 毛重净重 纸箱捆 一切险发票金额 提单运输单据 仲裁会签 II. Choose the best answer for each of the following questions. ( ) 1. We thank you for your letter of March 13 and the _____ catalogue.
A. given B. sent C. enclosed D. presented ( ) 2. They found an opportunity to purchase six _____ leather shoes. A. thousands pairs B. thousand pair of C. thousands of pair D. thousand pairs of ( ) 3. The letter we sent last week is an enquiry _____ digital cameras. A. about B. of C. for D. as ( ) 4. What kind of products do you think _____ particularly interested _____ A. are they, in B. they are, in C. are they, / D. they are, / ( ) 5. We owe your name and address _____ Italian Commercial Bank who informed us that you are in the market _____ table-cloths. A. from, for B. to, with C. from, with d. to, for ( ) 6. While _____ an enquiry, you ought to enquiry into quality and price etc.. A. making B. sending C. offering D. giving ( ) 7. In order to obtain the needed information, the inquirer should simple, clearly and concisely write _____ he wants to know. A. that B. so C. what D. because of ( ) 8. We are a specialized corporation, _____ the export of animal by-products. A. dealing with B. dealing C. handling D. dealt in ( ) 9. We are willing to enter into business relations with you on the _____ of equality and mutual benefit. A. base B. basis C. bases D. based ( ) would not give you any lower price _____ you could place an order for more than 500 tons. A. expect B. until C. unless D. besides ( ) 11. We _____ some brochures _____ to illustrate the types of materials we manufacture. A. enclose you, / B. enclose, you C. enclose, / D. enclose, to you
人教版九年级数学上册垂直于弦的直径家庭作业2016_题型归纳
人教版九年级数学上册垂直于弦的直径家庭作业2016_题型归纳 数学是一切哲学性、理论性思考与演绎的基础。查字典数学网小编为大家准备了这篇人教版九年级数学上册垂直于弦的直径家庭作业，希望对大家有所帮助。 人教版九年级数学上册垂直于弦的直径家庭作业2016 一、必做题 1、⊙O的半径是5，P是圆内一点，且OP=3，过点P最短弦、最长弦的长为. 2、如右图2所示，已知AB为⊙O的直径，且AB⊙CD，垂足为M，CD=8，AM=2，则OM= . 3、⊙O的半径为5，弦AB的长为6，则AB的弦心距长为. 4、已知一段弧AB，请作出弧AB所在圆的圆心。 5、问题1：如图1，AB是两个以O为圆心的同心圆中大圆的直径，AB交小圆交于C、D两点，求证：AC=BD 问题2：把圆中直径AB向下平移，变成非直径的弦AB，如图2，是否仍有AC=BD呢? 问题3：在圆2中连结OC，OD，将小圆隐去，得图4，设OC=OD，求证：AC=BD 问题4：在图2中，连结OA、OB，将大圆隐去，得图5，设AO=BO，求证：AC=BD 6.如图，已知AB是⊙O的弦，P是AB上一点，若AB=10，PB=4，OP=5，求⊙O的半径的长。 二、选作题如图，以O为圆心的两个同心圆中，小圆的弦AB的延长线交大圆于点C，若AB=3，BC=1，则圆环的面积最接近的整数是( ) A.9 B. 10 C.15 D.13 2.如图24-11，AB为⊙O的直径，CD为弦，过C、D分别作CN⊙CD、DM⊙⊙CD，⊙分别交AB于N、M，请问图中的AN 与BM是否相等，说明理由. 3.如图所示，CD是⊙O的直径，过弦AB两端分别作FA⊙AB，EB⊙AB，交CD所在直线于F、E.求证：CE=FD 人教版九年级数学上册垂直于弦的直径家庭作业到这里就结束了，希望同学们的成绩能够更上一层楼。
北语18秋外贸英语函电作业2
(单选题) 1: Please( ) us posted( ) the developments of your market. A: keep, by B: let, of C: keep, of D: let, by 正确答案: (单选题) 2: We wish to receive your shipping advice soon for the goods under the captioned ( ). A: letter B: cable C: contract D: communication 正确答案: (单选题) 3: We hope to receive your quotation with details ( ) the earliest date of shipment. A: including B: to be included C: being included D: include 正确答案: (单选题) 4: We offer you our lowest price, ( ) we have done a lot of business with other customers. A: which B: that C: with which D: at which 正确答案: (单选题) 5: We are establishing the relative L/C with the Bank of China, Shanghai and shall let you know by cable ( ) it is opened A: until B: before C: unless D: as soon as 正确答案: (单选题) 6: In ( ) of quality, our make is superior. A: terms B: term C: connection D: connections 正确答案: (单选题) 7: Our corporation handles exclusively the import and export business of light industrial ( ). A: products B: goods
九年级数学家庭作业：二次函数测试题
九年级数学家庭作业：二次函数测试题要想学好数学就必需少量重复地做题，为此，小编为大家整理了这篇九年级数学家庭作业：二次函数测试题，以供大家参考! 一、选择题(每题3分，共30分) 1. (2021兰州中考)二次函数y=a(x+1)2-b(a0)有最小值1，那么a、b的 大小关系为( ) A.a B.a 2.二次函数的图象如下图，那么以下结论正确的选项是( ) A. B. C. D. 3. (2021河南中考)在平面直角坐标系中，将抛物线y=x2-4先向右平移2个单 位，再向上平移2个单位，失掉的抛物线的解析式是( ) A.y=(x+2)2+2B.y=(x-2)2-2 C.y=(x-2)2+2 D.y=(x+2)2-2 4.一次函数与二次函数在同一坐标系中的图象能够是( ) 5.抛物线的顶点坐标是，那么和的值区分是( ) A.2，4 B. C.2， D. ，0 6.关于函数，使得随的增大而增大的的取值范围是( ) A. B. C. D.
7.关于恣意实数，抛物线总经过一个固定的点，这个点是( ) A.(1， 0) B.( ， 0) C.( ， 3) D. (1， 3) 8.抛物线经过原点和第一、二、三象限，那么( ) A. B. C. D. 9 . (2021呼和浩特中考)M、N两点关于y轴对称，且点M 在双曲线y= 上，点N在直线y=x+3上，设点M的坐标为(a,b)，那么二次函数y=-abx2+(a+b)x( ) A.有最大值，最大值为 B.有最大值，最大值为 C.有最小值，最小值为 D.有最小值，最小值为 10. (2021重庆中考)二次函数y=ax2+bx+c(a0)的图象如下图，对 称轴为直线x=- .以下结论中，正确的选项是( ) A.abc B.a+b=0 C.2b+c D.4a+c2b 二、填空题(每题3分，共24分) 11. (2021苏州中考)点A(x1,y1)、B(x2,y2)在二次函数 y=(x-1)2+1的图象上， 假定x11，那么y1 y2(填=或).
外贸英语函电试题库完整
《外经贸英语函电》试题库 I. Translate the following terms into English 目录按照要求 订单实盘 市场经济虚盘 电子邮件汇票 询盘装运 报盘还盘 报价利润 信用证折扣 你处形式发票 供你参考一式两份 信誉以……为准 支付条款唛头 代理与……建立业务关系 确认保险费 即期索赔 投保保险单 电子商务装船通知 集装箱托收 汇付成交 检验证书已脱销 毛重净重 纸箱捆 一切险发票金额 提单运输单据 仲裁会签 II. Choose the best answer for each of the following questions. ( ) 1. We thank you for your letter of March 13 and the _____ catalogue.
A. given B. sent C. enclosed D. presented ( ) 2. They found an opportunity to purchase six _____ leather shoes. A. thousands pairs B. thousand pair of C. thousands of pair D. thousand pairs of ( ) 3. The letter we sent last week is an enquiry _____ digital cameras. A. about B. of C. for D. as ( ) 4. What kind of products do you think _____ particularly interested _____ A. are they, in B. they are, in C. are they, / D. they are, / ( ) 5. We owe your name and address _____ Italian Commercial Bank who informed us that you are in the market _____ table-cloths. A. from, for B. to, with C. from, with d. to, for ( ) 6. While _____ an enquiry, you ought to enquiry into quality and price etc.. A. making B. sending C. offering D. giving ( ) 7. In order to obtain the needed information, the inquirer should simple, clearly and concisely write _____ he wants to know. A. that B. so C. what D. because of ( ) 8. We are a specialized corporation, _____ the export of animal by-products. A. dealing with B. dealing C. handling D. dealt in ( ) 9. We are willing to enter into business relations with you on the _____ of equality and mutual benefit. A. base B. basis C. bases D. based ( ) would not give you any lower price _____ you could place an order for more than 500 tons. A. expect B. until C. unless D. besides ( ) 11. We _____ some brochures _____ to illustrate the types of materials we manufacture. A. enclose you, / B. enclose, you C. enclose, / D. enclose, to you ( ) 12. They have _____ us that you are _____ the market _____ chemicals. A. inform, in, on B. informed, in, for
领跑中考九年级数学答案
领跑中考九年级数学答案 一选择题（每小题2分，共12分） 1.下列各式中，二次根式的个数为（） ，，，，，（≥0），（） A.3个 B.4个 C.5个 D.6个 2.下列图案中不是中心对称图形的是（） 3.计算的结果是（） A.－4 B.4 C. ±4 D.2 4.关于的方程是一元二次方程，则（） A. ＞0 B. ≠0 C. =1 D. ≥0 5.方程的根是（） A. =2，= B. =0，= C. =0，= D = ，= 6.如图，△ABC绕点A逆时针旋转后得到△AB′C′，若∠BAC′=130°，∠BAC=80°，则旋转角等于（） A.30° B.50° C.80° D.210° 二填空题（每小题3分，共24分） 7.平面直角坐标系内一点P（－2，3）关于原点的对称点的坐标是. 8.将化成最简二次根式的是. 9.当时，有意义. 10.等式成立的条件是. 11.如图所示的图形绕着中心至少旋转度后，能与原图形重合. 12.方程的一般形式是. 13.用配方法解方程，方程两边都加上. 14.如图，△AOB中，∠B=30°，将△AOB绕点O顺时针旋转52°得到△A′OB′，边A′B′与边OB交于点C，则∠A′OC的度数为. 三解答题（每小题5分，共20分） 15.计算： 16.用公式法解方程： 18.已知等腰三角形的两边长分别是方程的两根，求此等腰三角形的周长. 四、解答题（每小题7分，共28分） 19.关于的方程是否一定是一元二次方程，甲、乙两同学有不同意见： 甲同学认为：原方程中二次项系数与有关，可能为零，所以不能确定这个方程就是一元二次方程； 乙认为：原方程序中二次项系数肯定不会等于零，所以可以确定这个方程一定是一元二次方程. 你认为甲、乙两同学的意见，谁正确？证明你的结论. 20.如图，△ACD、△AEB都是等腰直角三角形，∠CAD=∠EAB=90°，∠BAC=30°，若△EAC绕某点逆时针旋转后能与△BAD重合，问： （1）旋转中心是哪一点？ （2）旋转了多少度？； （3）若EC=10㎝，则BD的长度是㎝.
北语20秋《外贸英语函电》作业1【标准答案】
(单选题)1: Please effect insurance ( ) the cargo for RMB 12,000, by s. S. Feng hua, from shanghai to New York. A: by B: at C: with D: on 正确答案: D (单选题)2: We trust that you will find our goods( ) A: attracting B: to be attractive C: attract your attention D: attractive 正确答案: D (单选题)3: We are willing to renew the agreement on the same terms ( ) last. A: like B: as C: with D: to 正确答案: B (单选题)4: The ship is scheduled to sail ( ) Hong Kong on the 23rd of this month. A: to B: for C: in D: by 正确答案: B (单选题)5: An English business letter should be concise. The phrase" few and far between" should be replaced by ( ) A: Seldom B: Before C: About D: If 正确答案: A (单选题)6: We would ask you to do everything possible ( ) punctual shipment. A: ensuring B: to be ensured C: to ensure D: while ensuring 正确答案: C
《外贸英语函电》试题2
A．receiving B. receive from you C．receive D．receive your 25. We confirm ______ you in reply. A. to cable B. cabling C. having cabled D. cabled Ⅲ. Translate the following into Chinese:（每小题3分，共15分） 1、We have received an inquiry from a client for Men's Shirts and request you to cable us your offer not later than the end of this month in order to conclude business. 2. We understand that there is a good demand for color TV sets in your market, and take this opportunity of enclosing our Quotation for your reference. ~ 3. Payment is to be made against sight draft drawn under a confirmed, irrevocable and transferable letter of credit without recourse. shipment of our Order has been found short in weight by 中国商检局),for which we regret we must lodge a claim amounting to $2000. 5. Your inquiry of October27 addressed to our Head Office has been passed on to us for attention. % IV. Translate the following into English: （1—6每小题分，7 —11每小题3分，共24分） 1.中国出口商品交易会 2. 60天远期汇票 3. 保兑行 4. 偷窃提货不着险 5. 不可抗力 6. 形式发票 7、我方已另封函邮样品和三本商品小册子。 8、一旦我方有货可供，定与贵方联系。^ 9、假如你方能接受“付款交单”支付方式，我们将非常感激。 10、外包装应坚固，以适合运输。至于内包装，必须具有吸引力，以促进销售 11、兹附上第345号销售合同一式两份，请会签并寄回一份以便我方存档。V. Write a letter of seller’s counter-counter-offer with the following particulars（共10分）: 1.卖方获悉买方8月15日的还盘，并得知买方认为卖方报价太高； 2.卖方告知买方，卖方报价已为买方处其他客户所接受，而且已有大量成 交。因此卖方认为不可能降价。 3.卖方认为鉴于双方之间长期的贸易关系，他才报此优惠价格，希望买 方重新考虑，并早日来电订货。 & VI. Write a letter of establishing business relations(共10分):