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單項(xiàng)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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單項(xiàng)選擇題

As a vessel changes course to starboard，the compass card in a magnetic compass（）.

A.remains aligned with compass north
B.also turns to starboard
C.first turns to starboard then counterclockwise to port
D.turns counterclockwise to port

單項(xiàng)選擇題

A system of reservoirs and connecting tubes in a gyro compass is called a（）.

A.spider element
B.mercury ballistic
C.gyrotron
D.rotor

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

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As a vessel changes course to starboard，the compass card in a magnetic compass（）.

A system of reservoirs and connecting tubes in a gyro compass is called a（）.

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As a vessel changes course to starboard，the compass card in a magnetic compass（）.