Lambert-Eaton综合征的电生理改变特点是( )
A.低频刺激递增B.高频刺激递减C.高频刺激递增D.低频刺激递减E.骨骼肌对任何刺激没有反应
参考答案:C
– Your father looks tired!
-- Yes, he worked for _________ after twelve o’clock.
A.two more hours
B.two another hour
C.more two hours
D.another two hour
滴瓶常用于盛放少量液体试剂,例如盛放浓碱液及常用的指示剂。( )