Many boys enjoy _______ football, basketball or baseball

Which do you think is ________, health or wealth？

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

多级放大电路常见的三种耦合方式为: ______、_______、______。

肌肉力量练习的基本运动方式有__________、_________、_________、_________.

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

常见低频电压放大器的偏置电路有_________、__________、__________、__________、___________。

Which do you think is _________________important, health or wealth?

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

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

带电阻性负载的单相半波可控整流电路中,晶闸管承受的最大正向电压为_________,最大反向电压为_________。( )

我国通常应用的交流电工频为________Hz。