脉冲发生器校验台，油箱油温加热应控制在多少度？
参考答案：
脉冲发生器校验台，油箱油温加热应低于75℃。
I think____________ necessary _____________ to take more exercise.
A．it, for Jim and me
B．it’s, to Jim and me
C．that , for Jim and I
D．that’s, to Jim and me
The boy, one of the so-called rich second generation, forced his parents to buy a new car _____ it might cost.
A．no matter how
B．however high
C．no matter how much
D．how much
