脑脊液氯化物低于多少mmol/L时,有可能导致中枢抑制而呼吸停止()
A.65
B.75
C.85
D.55
E.95
参考答案:C
Why not__________ your new ideas? Otherwise you will never know whether they are possible or not. [ ]
A. put out
B. wear out
C. try out
D. find out
甲、乙两个仓库存放一批化肥,甲仓库比乙仓库多120袋,如果从乙仓库搬出25袋放进甲仓库,乙仓库的化肥的袋数就是甲仓库的,乙仓库原有化肥()袋。
A.280
B.400
C.270
D.300