做好老干部工作的根本标准是（）、（）。
参考答案：让党放心；让老干部满意
—Does he tell you if he _____ tomorrow?
—No, he doesn't. But if he _____ , I'll call you up. [ ]
A. will come; will come
B. comes; comes
C. will come; comes
D. comes; will comes
X-R Chart用3Sigma作为控制线，若下限为4.5刀，上限为5.5刀，则3Sigma等于（）。
A.0.4刀
B.0.5刀
C.0.6刀
