每天机体合成的蛋白质中有肌蛋白()
A.10~11kg
B.0.8~1.0g/(kg·D.
C.1.2~1.5g/(kg·D.
D.20g
E.50g
参考答案:E
--Peter shut his mouth at the meeting all the time. How about Tom?
______________.
A.He does so
B.He did so
C.So does he
D.So did he
确定机械加上余量的()是根据以往的经验,估算零件各表面的加工余量。
A.分析计算法
B.经验估算法
C.查表修正法
D.加权平均法