某地12名女大学生身高与体重数据如表
上述表格中的资料属于
()
A.二项分类资料
B.无序分类资料
C.半定量资料
D.等级资料
E.数值变量资料
参考答案:E
ZPW-2000A型无绝缘移频自动闭塞系统,发送器、接收器各引线端子和金属外壳导电部分绝缘电阻应()。
A.≥25MΩ
B.≥50MΩ
C.≥100MΩ
D.≥500MΩ
Which of the following types of companies are more likely to use the payback method to evaluate capital projects()
A. Asian companies and private companies.
B. European companies and private companies.
C. Asian companies and larger companies.