神经细胞动作电位除极相的产生与Na+通道开放有关，这种Na+通道属_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

神经细胞动作电位除极相的产生与Na⁺通道开放有关，这种Na⁺通道属于

A．化学门控通道
B．电压门控通道
C．机械门控通道
D．细胞间通道
E．电突触

答案

参考答案：B

填空题

选用方框中词的适当形式完成短文。

go work get up take eat sell watch like have get

     My uncle __1__ in a big store.  He works very long hours.  He usually __2__ at six ten.  He has a
shower and __3__ breakfast at seven-twenty.  After breakfast he __4__ the bus to the store.  He __5__
  all kinds of sweaters and T-shirts in his store.   Now they __6__ some sweaters at a good price in the
store .  He has lunch at one-twenty.   At around five-thirty he __8__ home.  He has dinner with us.  Then
he __8__ TV.  After that he __9__ to bed at nine.  He__10__ his job very much.

单项选择题

2万m³湿式焦炉煤气柜与户外总油量为25吨的总变电站的防火间距为多少米？（）

A.25

B.30

C.40

D.50