单项选择题
A.警戒带 B.警示牌 C.警绳 D.盾牌
A.警械押解 B.武装押解 C.手铐押解 D.以多押少
A.May I have your attention,please? B.Can I have your book’s name,please? C.May I have a look at the gangway log book?
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