用45%司盘60(HLB=4.7)和55%吐温 60(HLB=14.9)组成的混合表

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问题单项选择题

用45%司盘60(HLB=4.7)和55%吐温 60(HLB=14.9)组成的混合表面活性剂的HLB值是

A．19.6
B．10.2
C．10.3
D．0.52
E．16.5

答案

参考答案：C

选择题

单项选择题

Each liferaft，which does not have an indicated maximum stowage height indicated on the liferaft，must be（）.

A.limited to carry no more than 10 persons

B.stowed not more than 59 feet above the lightest waterline

C.stowed in quick release racks

D.inspected every six months