在剖析各种绩效差距的原因时，“工作计划性不周”属于（）原因
A.个人
B.外部
C.组织
D.管理
参考答案：A
Now my hometown is ___ it used to be .
A．three times larger as
B．as three times larger than
C．larger as three times as
D．three times as large as
高频载波信号通常使用的频率为（）Hz。
A.1000
B.2000
C.3050
D.5000
