小儿肺炎病理生理变化中,最重要的改变为()
A.机体缺氧
B.毒血症
C.肺水肿
D.脏器功能异常
E.酸碱代谢失衡
参考答案:A
This project _____ considered thoroughly, and I’m sure it _____ finished on time.
A.must be; may be
B.should be; can be
C.may be; must be
D.can be; should
应当在驾驶室两侧喷涂车属单位名称、核载人数的是()。