三副航海英语习题讲解4.docxVIP

2017航海英语复习四Key word 14: compassKey word 14-1: magnetic compass （38）C431. What is an advantage of the magnetic compass aboard vessels?A. Compass error is negligible at or near the earth’s magnetic poles.B. It does not have to be checked as often. C. It is reliable due to its essential simplicityD. All points on the compass rose are readily visible.【知识点】磁罗经的优点【解析】简单可靠相关题目D608、Despite the rising importance and great convenience of the gyrocompass , the magnetic compass still retains its importance because of its ____.A. great convenience B. finding true north C. magnetic characteristics D. simplicity and reliabilityC563. Which one of the following is incorrect about magnetic compass?A. The magnetic compass is compulsory on any vessel.B. The magnetic compass is prone to error.C. The magnetic compass is always placed inside steel constructions.D. The magnetic compass needs to be calibrated to compensate for local magnetic distortion【知识点】磁罗经【解析】关于磁罗经的描述：强制配备、易于产生误差、需要校正A421. The MOST important feature of the material used for making the binnacle of a standardmagnetic compass is that it is ______.A. nonmagnetic B. weatherproof C. corrosion resistant D. capable of being permanently affixed to the vessel【知识点】磁罗经的结构【解析】罗经柜用料应是非磁性材料。A400. As a Vessel changes course to starboard, the compass card in a magnetic compass___.A.remains aligned with compass north B. also turns to starboardC.first turns to starboard then counterclockwise to portD. turns counterclockwise to port【知识点】磁罗经的使用【解析】船舶向右改向，磁罗经的罗盘保持指北不变。B417. The lubber’s line of a magnetic compass ______.A. always shows true north direction ? B. indicates the vessel’s headingC. is always parallel to the vessel’s transom D. is located on the compass card【知识点】磁罗经的使用【解析】船首刻度线相关题目B418. The lubber’s line on a magnetic compass indicates ______.A. compass north ? B. the direction of the vessel’s headC. magnetic north D. a relative bearin