
【名词&注释】
庆大霉素(gentamicin)、肾上腺素(epinephrine)、生理盐水(normal saline)、鼻出血(epistaxis)
[单选题]We ________ many European ports every year
A. call at
B. call for
C. call on
D. call in
查看答案&解析
举一反三:
[单选题]物质在20℃时蒸汽压力超过()的液货残余,可用通风作业从液货舱中除去
A. 5Kpa
B. 7Kpa
C. 9Kpa
[单选题]鼻出血(epistaxis)时可用纱布填塞压迫,棉球上可浸______。
A. 生理盐水
B. 庆大霉素
C. 肾上腺素
D. 以上都不是
[单选题]Which system should be supplied to obtain the best efficiency and lowest emissions?
A. Lean combustion principle
B. Fuel oil system
C. Electrical control system
D. Electronic control system
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