公务员具有与普通人一样的言论自由。( )

—My bike is broken.  

—______. [ ]

A. It doesn't matter                              

B. That's good  

C. Excuse me.                                  

D. I am sorry to hear that

“相傅之官”指的是（）。

A.心

B.肺

C.肝

D.脾

E.肾

People choose names like Alex and Serene because these names are _________. [ ]

A. well-known

B. well know

C. known well

D. know well

多关节 “主动不足”与“被动不足”

数字微波通信中，2ⁿPSK是（）调制方式

A、频移键控

B、相移键控

C、正交