搜题请搜索小程序“爱下问搜题”
问题 单项选择题

在心室肌细胞动作电位，L型Ca2+通道大量开放的时相是（）

A．0期

B．1期

C．2期

D．3期

答案

参考答案：C

选择题

—Where is Mr Smith?

—He   in prison for more than two months.

A．has been

B．has been sent

C．has been thrown

D．has been put
查看答案
选择题
—"Sorry, I broke your computer."
—"It doesn't matter. ________".

A. You'd pay for it.
B. I'll see to that
C. Not at all
D. Promise
查看答案