2018航海英语考前复习- 航海仪器(314题)

2 航海仪器（314题）

2.1 雷达及ARPA操作（71）

1.（2-40）__________ is a piece of equipment used to detect the presence of ships, buoys,

coast and many other targets and to obtain range and bearing of these targets.

A. The marine sextant

B. The chronometer

C. The echo sounder

D. The radar

答案：D

解析：雷达是用于探测船舶、浮标、海岸和许多其它物标存在的仪器，并测取这些物标的距离和方位。

2.（2-42）The officer of the watch should use radar when appropriate and at all times in

______ waters.

A. congesting

B. congested

C. congestion

D. congest

答案：B

解析：值班驾驶员应在合适时及拥挤水域应一直使用雷达。

3.（2-12）Radar makes it possible and much safer for us to sail ______.

A. In dense fog

B. In boisterous weather

C. In the open sea

D. In rivers

答案：A

解析：雷达使得我们在浓雾中航行成为可能并更加安全。

4.（5-137）In dense fog a vessel without operational radar may not be justified ______ at all

but should anchor if it is safe and practicable for her to do so．

A．to be underway

B．on under way condition

C．to stop engine

D．in being under way

答案：D

解析：在浓雾中没有可使用雷达的船舶根本没有理由在航而是应抛锚，如果抛锚对她来说安全可行的话。

5.（5-138）In restricted visibility the speed of a vessel without operational radar may be

______ enable effective avoiding action to be taken on sighting another ship．

A. too low to

B. too high to

C. too high for

D. too low for

答案：A

解析：能见度不良中，没有可使用雷达的船舶可能太慢而不能对看到的他船采取有效的避碰。

6.（2-130）It is dangerous for vessels without the use of radar______the estuary.

A.to get

B.to approach

C.to proceed

D.to close

答案：B

解析：不使用雷达的船靠近河口是很危险的。

7.（2-144）When your vessel is proceeding to the area of traffic density，______ is used to

determine the exact ranges of other ships or objects in the vicinity.

A. Radar

B. GPS

C. DF.

D. Satellite Navigator

答案：A

解析：当你船航行至交通密集区时，使用雷达来确定附近船只或物标的确切距离。

8.（2-247）Marine radars are used to measure ________ of ships to prevent collision with other

ships, to navigate and to fix their position at sea when within range of shore.

A .the course

B .the speed C. the bearing and distance D. the distance of advance

答案：C

解析：航海雷达用于测量船舶的方位和距离，以防止碰撞、导航，以及当岸在其量程以内时定位。

9.（2-46）The common way to obtain your ship‟s position is ______.

A. keeping a close watch and lookout

B. taking a radar range and bearing

C. observing a radar target and listening to signals

D. keeping a well clear caution

答案：B

解析：获得船位的通常方法是测取雷达距离与方位。

10.Marine radar range accuracy is generally______.

A. Low

B. High

C. Unstable

D. Very low

答案：B

解析：船用雷达测距精度一般很高。

11.（2-4）Radar makes the most accurate determination of the ______.

A. direction of target

B. distance of target

C. size of a target

D. shape of a target

答案：B

解析：雷达使物标距离的测定最为精确。

12.（2-28）Without doubt the radar is a highly important navigation aid. But duty officer shall

aware that_____when using it.

A.Its range reading is more accurate than its bearing reading

B.A low-lying coastline with a long, flat beach will show up properly on the radar

C.Radar is only aimed at collision avoidance.

D.The use of radar is necessary only when visibility is restricted.

答案：A

解析：毫无疑问雷达是一种非常重要的助航设备。但是值班驾驶员在使用的时候应该注意到它的距离读数比方位读数要精确。

13.What is the purpose of VRM control?

A. To measure distance accurately

B. To measure bearing accurately

C. To measure range accurately

D. To adjust radar monitor

答案：A