— I think I’ll give Bob a ring.

— You __________. You haven’t been in touch with him for ages.

A．will

B．may

C．have to

D．should

空调压缩机传动皮带检查用大约100N的力推动压缩机皮带轮与曲轴皮带轮之间的中间点，测量其偏移量来检查皮带的张紧度。