單項(xiàng)選擇題

According to MLC,the minimum hours of rest shall not be less than 10 hours in any 24-hour period,and（）hours in any seven-day period.

A.70
B.72
C.75
D.77

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單項(xiàng)選擇題

（）directly affect the fitness and ability of a seafarer to perform watchkeeping duties.

A.Smoking
B.Drug and alcohol abuse
C.Fruit
D.Vegetables

單項(xiàng)選擇題

Malacca Strait is 805 km（）and（）from 64 km in the S to 257 km in the N.

A.long, widens
B.long, wide
C.length, widens
D.length, wide