截面较大（如6mm2以上）的单芯导线用直径不小于2mm的铜扎线，从中间向两端顺序缠绕，至导线绝缘层端头10～20mm处。
参考答案：错
—Could you tell me_____?
—No problem.
A．when shall we go to meet our favourite TV star
B．how should we deal with the problem
C．what “Take care” means
D．what time it was
对于外露表面、负荷较小的摩擦面使用哪种润滑比较合适？（）
A.压力润滑
B.飞溅润滑
C.喷油润滑
D.定期润滑
