【简答题】HXD3电力机车转向架二系采用()螺旋弹簧。
【单选题】--- I rang you at about ten, but there was no reply. --- Oh, that was probably _____ I was seeing the doctor. [ ]
【单选题】- Must I show you how to operate themachine? - Oh, thank you. I __________ how todo it.
【单选题】-You were not in when I came over to your house. -Oh, I ____________ for a friend from England at the airport.
【单选题】轻度缺氧时 , 血气分析 PaO2 指标为
A.
10.1--13.33kPa PaO2(lkPa=7.5mmHg)
【单选题】现金日记账和银行存款日记账保管期限为()年。
【单选题】—How was your job interview? —Oh,I couldn’t feel _______.I hardly found ______ answers to most of the questions they asked.
【单选题】— I called you yesterday evening, but nobody answered the phone. — Oh, I a walk with my parents at that time.
【单选题】现金日记账和银行存款日记账保管期限为( )年。