何药必须静脉给药(产生全身作用时)()
A.肾上腺素
B.去甲肾上腺素
C.间羟胺
D.异丙肾上腺素
E.麻黄碱
参考答案:A
The river has become much ______ than before because of the waste water from the factories.
A. dirty B. dirtier C. dirtiest
手屈肌练习时,指浅屈肌相对于骨滑动范围最大的是()
A.直拳
B.全拳
C.半握拳
D.勾拳
E.握玻璃杯状