If your vessel is the stand-on vessel in a crossing situation().
A. You must keep your course and speed
B. You may change course and speed as the other vessel must keep clear
C. The other vessel must keep her course and speed
D. Both vessels must keep their course and speed
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物流代理企业可以按照物流业务代理的范围,分成()和()。
工资可以以法定货币支付,也可以实物及有价证券替代货币支付。
A. 正确
B. 错误
铸铁的种类有:灰口铸铁、可锻铸铁、白口铸铁、合金铸铁及()。
A. 黑心铸铁
B. 耐磨铸铁
C. 球墨铸铁
D. 耐热铸铁
劳动部门开办的职业介绍机构与非劳动部门开办的职业介绍机构的区别?