单项选择题
The backup system on an electric start survival craft is a（）.
A.hydraulic system
B.pneumatic system
C.spare battery
D.hand crank
点击查看答案&解析
相关考题
-
单项选择题
Symptoms of sea sickness include（）.
A.fever and thirst
B.nausea and dizziness
C.stomach cramps and diarrhea
D.reddening of skin and hives -
单项选择题
Symptoms of heat stroke are（）.
A.cold and moist skin，high body temperature
B.cold and dry skin，low body temperature
C.hot and moist skin，high body temperature
D.hot and dry skin，high body temperature -
单项选择题
Sign(s) of respiratory arrest requiring artificial respiration is(are)（）.
A.vomiting
B.blue color and lack of breathing
C.irregular breathing
D.unconsciousness
