锅炉安装鼓、引风机时，试运行时，检查轴承的温升不得高于（）︒Ｃ︒
A、30
B、40
C、50
D、70
参考答案：B
—May I speak to Miss Wang?
—Sorry. She isn't in. She ________ to Hong Kong. [ ]
A. has been
B. has gone
C. goes
D. went
如何正确理解马克思主义中国化的科学内涵？
