()适用于两个变量均为二分称名变量的相关计算。A.点二列相关 B.二列相关 C.Φ相 发布时间:2018-01-06 10:16 │ 来源:www.tikuol.com 题型:单项选择题 问题: ()适用于两个变量均为二分称名变量的相关计算。A.点二列相关B.二列相关C.Φ相关D.积差相关
题型:单项选择题 —Where is your father, Leo? —He is in Hainan on vacation. He ______ for two weeks.[ ]A. has been away B. has left C. has gone D. left 查看答案
题型:单项选择题 – Who is the man_______ here?--- Captain Cook.A.in the chargeB.under the chargeC.in chargeD.in charge of 查看答案
题型:单项选择题 根据《长途光缆波分复用(WDM)传输系统工程验收规范》,下列关于电缆布放和成端要求的描述,正确的有()。A.电缆的规格程式应符合施工图设计要求B.电缆布放的路由应符合施工图设计要求C.电缆在槽道内布放应顺直、捆扎牢固、松紧适度D.电缆开剥尺寸应与缆线插头的对应部分相适合,成端好的接头尾端不应漏铜 查看答案