什么叫尺寸超差?
参考答案:
尺寸超差是轧件尺寸超出标准规定的允许偏差。其中包括大于规定尺寸的上限和小于规定尺寸的下限。
Jack is late again. It is ____ of him to keep others waiting.
A.aggressive
B.appropriate
C.desperate
D.typical
熟地黄的功效是
A.凉血,滋阴,补精B.养血,滋阴,补精C.活血,滋阴,补精D.滋阴,补精,益髓E.凉血,补精,益髓