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什么是差额预算?

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变态的类型(),(),(),(),()。

A quite simple method of improving a berth’s capacity is().

A. to increase the arrival/start of operations interval
B. to increase the finishing of operations/leaving berth interval
C. to decrease both the arrival/start of operations interval and the finishing of operations/leaving berth interval
D. to decrease working shift

用万用表(机械表)电阻档怎么判断电容器的好坏?

请按完备性法则要求,描述“自行车”这一技术系统。

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