自控仪表管道施工图其功能代号()表示流量。
A、F
B、T
C、P
D、L
参考答案:A
As a vessel sinks to a depth of 15 feet,the hydrostatic trip releases the liferaft container from its cradle by().
A.breaking the weak link
B.releasing the tie-down strap
C.pulling the operating cord
D.releasing the CO2 canister
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