办事公道就必须做到（）。
A.坚持真理
B.公私分明
C.公平公正
D.三者都有
参考答案：D
Which of the following types of unemployment is most likely to be associated with an economy in which many workers have been made obsolete by changing technology（）
A. Cyclical.
B. Frictional.
C. Structural.
STM-4一帧的字节数是（）
A.9³270
B.9³270³4
C.9³261
D.9
