变异系数越大，说明
A．标准差越大B．平均数越小C．平均数越大D．标准差和均数都大E．单位均数的变异越大
参考答案：E
An order came from the command ________ all the PLA men should rush to the disasterhit area
to help the people there.[ ]
A. how
B. that
C. which
D. where
稀莶草除祛风湿、通经络，清热解毒外，又能
A．降血压B．杀虫解毒C．强筋健骨D．利水消肿E．定惊止痉
