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【单选题】
吸人性窒息的急救措施主要是A.
清除口、鼻及咽喉部堵塞物
B.
将舌牵出口外
C.
使患者头偏一侧或采取俯卧位
D.
吊起下坠的上颌骨块
E.
立即行气管切开，通过气管导管吸出堵塞物
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举一反三
【单选题】Fresh Water Shortage A water crisis is about to explode. Fresh water is a finite resource. The amount of fresh water supply provided by the hydrological cycle does not increase. Water everywhere on th...
A.
Y
B.
N
C.
NG
【单选题】Fresh water is used for the cooling of the cylinder jackets and _____of the main engine.
A.
cylinder covers
B.
crosshead
C.
exhaust manifold
D.
main bearing
【单选题】Fresh water is used for the cooling of cylinder jackets and （） of the marine diesel engine.
A.
cylinder covers
B.
lubricating space
C.
crosshead
D.
exhaust manifold
【单选题】Fresh water is used for cooling of cylinder jackets and _____ of the marine diesel engine.
A.
Cylinder covers
B.
Lubricating space
C.
Crosshead
D.
Exhaust manifold
【单选题】（） is used for cylinder and cylinder head, the salt water is used for cooling the lubricating oil, the fresh water in the coolers and the charging air in the air cooler.
A.
The fuel oil
B.
The lube oil
C.
The sea water
D.
The fresh water
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