钢绞线的表面质量要求是()
A.允许有轻微浮锈
B.允许有油渍
C.允许有润滑剂
参考答案:A
Tom is clever at numbers and I think he will ________ an excellent accountant.
A.make
B.turn
C.appear
D.grow
基本/非基本比率(B/N)