采用热装法装配轴承时，将轴泵放入油槽中加热，温度不（）超过为宜。
A.150℃
B.120℃
C.100℃
D.80℃
参考答案：C
消防用电设备的配电线路暗敷设时应设在不燃烧体结构内且保护层厚度不应小于（）。（易）
A、30mm
B、50mm
C、120mm
D、200mm
An instructor scored a student’s test of 50 questions by subtracting 2 times the number of incorrect answers from the number of correct answers. If the student answered all of the questions and received a score of 38, how many questions did that student answer correctly ？（）
A.19
B.38
C.41
D.44
E.46
