小儿液体疗法的补液原则是()
A.先慢后快
B.先盐后糖
C.先浓后淡
D.见尿补钾
E.防惊给钙
参考答案:B, C, D, E
Had it been possible I would have gone to the movies but I _____ busy.
A.had been
B.am
C.was
D.would be
冲击地压临界深度一般大于()m。
A、100
B、200
C、300
D、400