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單項(xiàng)選擇題

Movement of liquid in a tank when a vessel inclines causes an increase in（）.

A.righting arm
B.metacentric height
C.height of the uncorrected KG
D.natural rolling period

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單項(xiàng)選擇題

Neglecting friction, you desire to life a 300 kgs weight with a stress on the hauling part of 100kgs.Which of the following tackles would you use ?（）.

A.Gun tackle
B.Luff tackle
C.Toe-fold tackle
D.Double-luff tackle

單項(xiàng)選擇題

Never（）stowed like this.

A.optional cargo should be
B.should optional cargo be
C.should be optional cargo
D.should optional cargo

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