单项选择题

The total berth time for a vessel can be reduced through a reduction（）.

A.of working gangs
B.of idle time
C.in productivity of the working shifts
D.of working hours each working day

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单项选择题
The transportation of dangerous cargo in packages is governed by（）.

A.IBC code
B.BC code
C.IMDG code
D.IGC code
单项选择题
The use of（）between bags may lead to chafage and tearing of the bags.

A.strips of burlap
B.heavy paper
C.dunnage boards
D.strips of rope yarm
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