补体结合试验前受检血清需灭活,常用下列哪种方式()。
A.37℃孵育30min
B.45℃孵育30min
C.56℃加热30min
D.60℃加热15min
E.室温下2h
参考答案:C
Towlines should be inspected for chafing where the towline().
A.passes over the stern of the towing vessel
B.passes through chocks
C.is attached to the disabled vessel
D.All of the above
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