All people, whether they be rich or poor, strong or weak, privileged or deprived，are interdependent, and _______ the common task of seeking to achieve mankinds full potential

工作时只承受弯矩,不传递转矩的轴,称为______。

Many boys enjoy _______ football, basketball or baseball

－ What does the sign over there read － “No person ________ smoke or carry a lighted cigarette, cigar or pipe in this area”

Which do you think is ________, health or wealth？

普通平键的工作面是______,工作时靠_____传递转矩;其剖面尺寸按____选取,其长度根据_____决定。

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

Which do you think is _________________important, health or wealth?

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.

电力拖动实现了___ 与___ 之间的能量转换,运动控制系统的任务是通过控制电压、电流、频率等输入量,来改变工作机械的转矩、速度、位移等机械量,是各种工作机械按人们期望的要求运行。

工作中既承受弯距又承受转矩的轴，称为________。