心脏骤停时,心肺复苏的首选药物是()
A.异丙肾上腺素
B.去甲肾上腺素
C.多巴胺
D.肾上腺素
E.间羟胺
参考答案:D
The flowers his friend gave him will die unless __________ every day.
A.watered
B.watering
C.water
D.to water
接单跟时,检查()的上紧程度,防止上吊过程中滑扣现象的发生。
A.钻头
B.卡瓦
C.大钩
D.提环