对于投保人解除人身保险合同的，保险人应自收到解除合同通知之日起（）日内（）做才符合《

使用向导创建数据访问页时，在确定分组级别步骤中最多可设置______个分组字段。

Temperature changes during the day or night can be great   6      small. This depends partly 7      how many clouds are in the sky.   8         there are many clouds during the night, they act like tile covers on your bed. They blanket the earth and keep the air from losing much of   9         heat. The temperature usually does not drop much during such a night. When there are many clouds during   10         day, some of the sun's energy will not reach the earth. The temperature usually does not rise much on such a day.   

法律对同一事项的新的一般规定与旧的特别规定不一致，不能确定如何适用时，由哪个机构裁决( )

A．全国人民代表大会

B．全国人民代表大会 * * 团

C．全国人民代表大会常务委员会

D．全国人民代表大会常务委员会委员长会议

键盘输入发生“串键”错误是指 ( )

A．键入某一键值，得到的是另一个键的键值

B．同时按下了多个键

C．有键按下但没有键值输出

D．按一个键但得到多个键的键值

根据国家标准规定LB4铝包钢线，其导电率为（）1ACS。

A.20.3%

B.27%

C.30%

D.40%