吸入性糖皮质激素与细胞膜特殊位点结合后,可提高与下列哪种受体结合的去甲肾上腺素浓度()。
A.α-肾上腺素受体
B.β-肾上腺素受体
C.乙酰胆碱受体
D.全部都错
参考答案:A
Large quantities of water , as well as some other timely help including a medical team, _____ since the serious drought hit Yunnan Province.
A.has offered
B.had been offered
C.have been offered
D.is offered
不属于抢救物品五定的内容是
A.定点放置B.定人保管C.定数量、品种D.定时间E.定期检查维修