【单选题】主动齿轮有10个齿,它以20Nm的力矩驱动具有50个齿的被动齿轮,被动齿轮得到的力矩是多少?( )
【单选题】It is ( ) impossible to find a good English-speaker in this small town.
【单选题】I want to find a good way ________ my English.
【单选题】主动齿轮有10个齿,它以20Nm的力矩驱动具有50个齿的被动齿轮,被动齿轮得到的力矩是( )。
【判断题】Good spoken and written English skills are essential for a non-native student to find a good job in the USA.