奥氏体不锈钢固定式压力容器水压试验水的氯离子含量不得超过()g/m3
A、40
B、50
C、25
D、30
参考答案:C
He ______ at that school a year ago.
A.studies
B. study
C.studying
D.studied
We’ll take a honeymoon trip to Venice. Would you like to _________ my dog for me while we’re away?
A.look at
B.search for
C.watch over
D.care about