單項(xiàng)選擇題

You’d better（）your course to port to avoid collision.

A.to alter
B.alter
C.altering
D.altered

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單項(xiàng)選擇題

Your fireman’s outfit includes a(n)（）.

A.chemical protection face shield
B.approved work vest
C.self-contained breathing apparatus
D.marlinspike

單項(xiàng)選擇題

Your ship is in shallow water and the bow rides up on its bow wave while the stern sinks into a depression of its transverse wave system. What is this called?（）.

A.Broaching
B.Fish tailing
C.Squatting
D.Parallel sinkage