【单选题】—Amy,I called you yesterday evening,but nobody answered the phone. —Oh,I a walk with my mother at that time. [ ]
【单选题】— Hello, Jackey. I rang you up at this time yesterday evening, but nobody answered. — Oh, I _____ the shopping in the supermarket with my mother. [ ]
【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】—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.
【简答题】HXD3型电力机车转向架采用滚动抱轴承( )结构,二系采用高圆螺旋弹簧。