各种危及生命的严重低血压状态,需用对心率影响最小和α受体激动剂时用()|过敏性休克或心搏骤停时,选用()|适用于Ⅱ度、Ⅲ度房室传导阻滞,阿托品治疗效果差的心动过缓患者的药物是() A. 多巴胺 B. 去氧肾上腺素 C. 去甲肾上腺素 D. 肾上腺素 E. 肾上腺素
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【单选题】An external power source can be connected to the AC tie bus through the external power receptacle and the external power contactor( EPC ). choose the rihgt answer:
A.
the external power source is AC electrical power
B.
the external power receptacle is in the cockpit
C.
the external power contactor is on the overhead panel in the cockpit
D.
the AC tie bus is used carry passengers and is driven by AC power