题目内容

对人民检察院不批准逮捕而未说明理由的,公安机关不得要求人民检察院说明理由。

A. 正确
B. 错误

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对废水样品的采集,浅水可用容器直接采集;深层水则应用专制的深层采水器采集。

A. 正确
B. 错误

冷冻机油在空调制冷系统中完全()制冷剂中,并随制冷剂一起在制冷系统中循环。

If the Charterer sends the vessel on her last voyage at a time when there is no expectation that she will be redelivered within a reasonable time of the end of the period of the Charterparty,and she is in fact redelivered late,he().

A. has properly fulfilled the contract
B. is not guilty of a breach of contract
C. is entitled a right to take legal action against any loss or damage he suffered in this connection
D. is guilty of a breach of contract

为减小困油现象的危害,常在齿轮泵啮合部位侧面的泵盖上开()。

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