安装离心泵检查泵轴时,要求轴颈的椭圆度不超过()。
A.0.02mm
B.0.04mm
C.0.06mm
D.0.08mm
参考答案:A
I’m not used to the way you speak to me. __________, I don’t want to continue the conversation.
A.In word
B.At all
C.In other words
D.In another words
具有“主治节”功能的脏是()。
A.肝
B.心
C.脾
D.肺
E.肾