單項(xiàng)選擇題() thrust and resistance equal each other, the ship always travels at a constant speed.

A.As long as
B.As far as
C.As well as
D.Unless


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1.單項(xiàng)選擇題(), we kept removing the pistons.

A.Late as it was
B.As it was late
C.Since it was late
D.Because of its late

4.單項(xiàng)選擇題For vessels with (), the meaning of the order would include the combination of pitch and revolutions as indicated in ships orders.

A.fixed pitch propellers
B.uncontrollable pitch propeller
C.constant pitch propellers
D.variable pitch propellers

5.單項(xiàng)選擇題The order “Bow thrust stop” means “()”.

A.Bow thrust full to pert
B.Bow thrust full to starboard
C.No bow thrust revolutions
D.No stern thrust revolutions

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