某交流电电源电压的瞬时值表达式为u=6sinl00πt（V），则下列说法中正确的

--- Did you telephone Uncle Sam our plan for the Christmas holidays on his farm?

--- Yes, he was happy about our arrival, and he eagerly asked when         .

A．has we arrived

B．we had arrived

C．were we arriving

D．we were arriving

判断每组单词画线部分发音是否相同。

1.(   ) listen, unit                   2.(   ) eraser, act                    3.(   ) sorry, brother

4.(   ) late, case                    5.(   ) phone, sofa                  6.(   ) please, pencil

7.(   ) hat, desk                    8.(   ) book, Ben

( )是指商业银行向客户提供财务分析与规划、投资建议、个人投资品推介的专业化服务。

A．理财顾问服务

B．综合理财服务

C．单项理财服务

D．私人银行业务

其它车辆向停有角W车辆线路溜放或送车时，必须留有（）m天窗。

A.3

B.5

C.10

D.30

浊度是用以表示（）的浑浊程度的量。

A、溶液

B、气体

C、水

D、气液混合物