單項選擇題

Officers use sextants to observe （）.

A. stars
B. celestial bodies
C. the sun
D. the moon

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單項選擇題

The telegraph is the（）(設(shè)備)that connects the engine room and the bridge.

A.gear
B.equipment
C.engine
D.sextant

單項選擇題

The captain wants to see the （）.

A. chief officer
B. second officer
C. third officer
D. carpenter