令牌环网采用的是______协议。
参考答案:令牌环
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