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單項選擇題

At the master gyrocompass，the compass card is attached to the（）.

A.spider element
B.sensitive element
C.link arm
D.pickup transformer

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單項選擇題

At sea，we can use（）to fix the ship’s position.

A.VHF
B.Steering Gear
C.Rudder Indicator
D.Loran

單項選擇題

Assumption shall（）on the basis of scanty information especially scanty radar information.

A.make
B.be made
C.not make
D.not be made

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