危险废物贮存设施的底部必须( )。
A.低于地下水最高水位B.高于地下水最高水位C.高于地下水最低水位D.低于地下水最低水位
参考答案:B
阅读理解。
TV. His mother is standing near the window. She's giving some food to Polly. Polly says, "Thanks !
Thanks! " Where's Jim? Oh, he's behind the door. His sister Kate is looking for him . They are playing
games. They have no homework on Sunday evening.
B. four
C. five
D. six
B. Jim's sister.
C. Jim's father.
D. Jim's mother.
B. two girls
C. two boys
D. brothers and sisters
B. isn't
C. don't
D. not
B. She's standing near the window.
C. She's looking for a pen
D. She's playing games.
新生儿大肠杆菌脑膜炎抗生素应用时间一般为()
A.临床症状消失即可停药
B.脑脊液正常即可停药
C.用药一周即可停药
D.脑脊液无菌或正常后2周
E.脑脊液不正常,但临床症状已消失,2周以上即可停药