皮皮学，免费搜题
登录
搜题
【单选题】
设 当a=( )时, 在 上连续A.
0
B.
1
C.
2
D.
3
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
【单选题】It can be learned from Paragraph 4 that______.
A.
people nowadays communicate less with their physical neighbours
B.
people interact more often with those nearby than those faraway
C.
neighbourhoods are becoming more heavily populated
D.
a digital form. of neighbourhood has come into being
【简答题】We can infer from the text that the employees of the enterprise______. [A] would start their work by listening to a joke [B] were cold to newcomers [C] were always punctual for work [D] lacked devotio...
【简答题】已知用户表信息如下: 按要求写出对应的SQL语句 1、查询用户名为sqdd的用户信息 2、查询所有管理员的信息 3、查询用户名为sqdd,密码为1234的用户信息
【单选题】设 R={,,,,,}是定义在集合 A={1,2,3,4,5,6}上的关系,则R的6次幂为()
A.
{<1,1>,<1,2>,<1,3>,<2,4>,<3,5>,<4,6>}
B.
{<1,1>,<1,2>,<1,3>,<1,4>,<2,5>,<3,6>}
C.
{<1,1>,<1,2>,<1,3>,<1,4>,<1,5>,<2,6>}
D.
{<1,1>,<1,2>,<1,3>,<1,4>,<1,5>,<1,6>}
【简答题】IEEE 802.11 MAC层的帧分为数据帧、 和控制帧。
【单选题】It can be inferred from the passage that ______.
A.
Americans' character is affected by their social and geographical environment
B.
Americans want to participate in all kinds of activities
C.
curiosity is characteristic of Americans
D.
Americans do not know how to deal with silence
相关题目：
参考解析：
知识点：
题目纠错 0
发布
