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船舶灭火战术是封堵火势,防护周围,先探明火情,后采取行动。
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钩藤具有的功效是( )。
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患儿,出生10天。全身冰冷,僵卧少动,反应极差,气息微弱,哭声低怯,口吐白沫,呼吸不匀,面色苍白,肌肤板硬而肿,范围波及全身,皮肤暗红,少尿。唇舌色淡,指纹淡红。治疗首选方()
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In an ordinary diesel engine the fuel injection begins ()
In an ordinary diesel engine the fuel injection begins ()
For an ordinary four-stroke diesel engine the exhaust valves close ().
For an ordinary four-stroke diesel engine the exhaust valves close ().
Which of the following is true about the fuel injection with an ordinary diesel ...
Which of the following is true about the fuel injection with an ordinary diesel ...
For an ordinary four-stroke engine the inlet valves open ()
In an ordinary four-stroke engine the exhaust valves open ()
For an ordinary modem marine four-stroke engine the inlet valves close ().
For an ordinary four-stroke engine the inlet valves open ()