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【单选题】
Your tanker is carrying a cargo of styrene．Which of the following is NOT a requirement for carriage of this cargo ________．A.
P/V valves with galvanized parts must be replaced
B.
Authorization to carry styrene must be endorsed on the Certificate of Inspection
C.
You must have a Certificate of Inhibition provided by the shipper
D.
The cargo tank heating coils must be blanked off
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【简答题】在旅游过程中，全陪、地陪和领队之间建立良好协作关系的前提是（ ）。
【多选题】万用表使用后，应做到：（）。
A.
拔出表笔
B.
将选择开关旋至“OFF”档，若无此档，应旋至交流电压最大量程档
C.
若长期不用，应将表内电池取出，以防电池电解液渗漏而腐蚀内部电路
D.
将选择开关旋至“1000V”档
【单选题】Vitamin D helps our bodies make a special chemical, and this special chemical, _______, affects
A.
28. Vitamin D helps our bodies make a special chemical, and this special chemical, _______, affects our brains, making us feel happy. A．in turn
B.
in particular
C.
in return
D.
in short
【简答题】化学修饰(chemical modification)
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