氢气不能与任何（）混储、混运，尤其是不能与氧气、氯气混储、混运。（）
A、固体
B、氧化剂
C、液体
D、气体
参考答案：B
---Mr. White didn’t come last night, did he?
---No. We for him. A whole night was wasted.
A. had waited B. have been waiting C. were waiting D, had been waiting
SATA3.0的数据传输率可达（）Mb/s。
A.150
B.300
C.450
D.600
