阿曲库铵的代谢()
A.完全由肾脏排泄
B.主要由肾脏排泄
C.40%~60%由肾脏排泄
D.经Hoffmann途径排泄
E.由血浆胆碱酯酶水解
参考答案:D
一列简谐横波沿x轴正向传播,已知x轴上x1=0处质点振动图线如图甲所示,x2=3m处的另一质点振动图线如图乙所示,且已知x1、x2间距小于一个波长,则此列波的传播速度是( )
A.6m/s
B.3m/s
C.2m/s
D.1.5m/s
The development of laryngeal cancer is most clearly linked to which of the following factors()
A. High-fat, low-fiber diet.
B. Alcohol and tobacco use.
C. Low socioeconomic status.
D. Overuse of artificial sweeteners.