_______________will not continue if an ongoing operation is changed or deletedA、

______螺纹常用于联接,______、______螺纹和______螺纹常用于传动。

_____螺纹常用于联接,螺纹联接常用的防松方法有______,_____和改变联接性质三类。

29．__________ when you are on the bus or bike．

Which do you think is _________________important, health or wealth?

And they can ______their passports______，making leaving or “escaping” virtually impossible.

Either he or I ______to the airport.

Duty is an act or a course of action that people __________you to take by social customs, law or religion.

带电作业工具房门窗应_____，地面、墙面及顶面应采用_____、_____制做。

Hurry up, or you ______ catch the train.

钢筋连接中，螺纹接头应检验______，挤压接头应量测______。（　　）

采用螺纹联接时，若被联接件总厚度较大，且材料较软，在需要经常装拆的情况下宜采用________。