皮皮学，免费搜题
登录
搜题
【单选题】
四格表资料的 检验的自由度( )。A.
不一定等于1
B.
一定等于1
C.
等于格子数-1
D.
等于样本含量-1
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】Sending e-mail is relatively cheap and quick. For example, a short message can be sent around the world in less than a minute. When you send an e-mail, the message waits in the person's mailbox which ...
【单选题】In the short transmission line model, when calculating the sending end voltage:
A.
Only resistance is included in the calculations
B.
Only resistance and inductive reactance are included in the calculations
C.
Only resistance and capacitive reactance are included in the calculations
D.
Resistance, inductive reactance and capacitive reactance are included in the calculations.
【单选题】在中国期刊全文数据库检索时,字段限定在作者字段,检索式“李红”,选择“精确匹配”,可以命中哪些记录?
A.
作者为“李红”的记录
B.
作者为“李红英”的记录
C.
作者为“李红霞”的记录
D.
作者为“红霞”的记录
【多选题】在中国期刊全文数据库检索时,字段限定在作者字段,检索式“李红”,选择“模糊匹配”,可以命中哪些记录?
A.
作者为“李红”的记录
B.
作者为“李红英”的记录
C.
作者为“李红霞”的记录
D.
作者为“红霞”的记录
【单选题】Sending and receiving short messages on every festive occasion has become the ( ) among the Chinese people.
A.
rag
B.
rage
C.
rug
D.
raid
【单选题】_______ messaging is the process of sending short electronic messages using a wireless network.
A.
Text
B.
Webcast
C.
E-mail
D.
Podcast
相关题目：
参考解析：
知识点：
题目纠错 0
发布
