After an accident you wait for the police because ______.
A.it is against the law to drive off
B.they have to examine your papers
C.somebody may give them a false account of the ear
D.they have to note the position of your car
第2题
不属于委托外加工备料管理内容。
A.缺料分析
B.备料作业
C.标准领料管制
D.物料的备料检出工作
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