某部件加工的时候，设计尺寸10mm（误差为+0.010，-0.005），通过随机检验，经过计算已经知道：样本平均值和公差中心重合，s=0.008，回答下列问题：
工序能力是指在一定的时间范围内，处于稳定状态下加工产品质量正常波动的幅度，以质量特性值分布的六倍标准差来表示，记为6σ，则（）。

A．their social roles are rigidly determined
B．most boys would like to follow their fathers' professions
C．boys like to play with their fathers while girls with their mothers
D．they like challenging activities

A．At5 p.m.
B．After 5 p.m.
C．After 3 p.m.
D．From 3 to 5 p. m

A．The park is nearby.
B．He doesn't know about the park.
C．There is no parking here.
D．He doesn't understand the question.