护士在与病人交谈中，提问应注意（）

A.问题说得简单而清楚

B.不问对方难回答的问题

C.语言要通俗易懂

D.一次问两个问题

E.在安静的环境下提问

The upper and lower control limits in a control chart indicate that （）.

A．boundaries the customer will accept

B．acceptable specification limits

C．acceptable range of variation in the process

D．statistical control points form judging the success or failure of the project