1. [单选题]一般()作为船舶的安全员，主要对船舶的安全活动负责
A. 大副
B. 二副
C. 轮机长
2. [单选题]A thermostatic expansion valve is properly controlling evaporator superheat. Adjusting this valve to lower the superheat will result in a/an
A. evaporator pressure decrease
B. evaporator coil over-feed
C. evaporator capacity increase
D. expansion valve diaphragm rupture
3. [单选题]体的体温降到多少度时就会死亡：
A. 2～30℃
B. 30～28℃
C. 26～24℃
D. 37℃以下
