统计学上称小概率事件是指随机事件发生的概率()
A．P＝0.05
B．P＞0.05
C．P≤0.05
D．P≤0.10
E．P＞0.10
参考答案：C
—Sorry, I can't work out this problem.
—Try again, please.It's only _____ difficult. [ ]
A. a bit
B. a lot
C. a bit of
D. much too
零件加工精度的主要内容有哪些？
