随着装置内部各种线圈要屏蔽或距离要远些，注意漏磁方向，减小（）。
参考答案：互感耦合
朱砂含量测定的成分是
A．含水硫酸钠B．含水硫酸钙C．二硫化二砷D．硫化汞E．二硫化铁
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
