承力索、接触线线夹螺栓的紧固力矩（）Nm。
A、30
B、25
C、23
D、20
参考答案：B
—Did you have a good time in Tai’an last week?
—________________, it was too cold．
A．Not really
B．Oh, great
C．You’re right
D．Yeah, why not
注射用大豆油的酸值不大于（）
A.0.1
B.0.2
C.0.3
D.0.4
E.0.5
