液压泵的理论扭矩（）实际扭矩，液压马达的理论扭矩（）实际扭矩。

A.大于，小于

B.小于，大于

C.大于，大于

D.小于，小于

Due to the hazards involved with Halon extinguishers on a ship，the size II extinguisher may only be used（）.

A.outside

B.on class C fires

C.in an emergency

D.on class B fires