按JG5071规定，滑轮(或链轮)应设有防止钢丝绳(或链条)脱槽的装置，并能防止异物进入滑轮(或链轮)，滑轮的节径与悬挂钢丝绳的公称直径之比不得小于()。
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Your tanker is carrying a cargo of styrene．Which of the following is NOT a requirement for
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
______ are experienced in temperate latitudes during warm summer weather but rarely exceed
A. Trade Winds
B. Winds of the temperate zones
C. Monsoons
D. Land and Sea Breezes
两条船，在装载后初稳性高度相同，说明它们的稳性_________。
A. 一定相同
B. 一定不相同
C. 是否相同不能确定
D. 不可能相同
报告是呈阅性公文，请示是___________公文。
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