皮皮学，免费搜题
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【单选题】
关于灰铸铁孕育处理，下列哪种说法正确？A.
促进石墨化，降低倾向
B.
阻碍石墨化，增加倾向
C.
干扰项 1 （不必选）
D.
干扰项2 （不必选）
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
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【单选题】在社会活动日中将各民族、各国的朋友请进幼儿园，与儿童一起联欢，共同进行分享和体验活动属于()。
A.
自我教育活动
B.
社会环境与规范认知活动
C.
人际交往教育活动
D.
多元文化教育活动
【单选题】The Value of Motherhood In shopping malls，the assistants try to push you into buying“a gift to thank her for her unselfish love'． When you log ontol a website，a small popo—up2 invites you to book a bo...
A.
The American version of Mother’s Day was thought up as early as 1905，by Anna Jarvis，as a way of recognizing the real value of motherhood．
B.
But what’s more,commercialism changes young people’s attitude towards motherhood.
C.
Obviously，the best gift will be a phone call or a visit．
D.
According to a research by the US card company Hallmark，96 percent of American consumers celebrate the holiday。
E.
As a result,motherhood has suffered a huge drop in status since the 1950s.
F.
In addition，women are being encouraged to pursue any career they desire. 第 21 题 请选择（1）处的最佳答案．
【单选题】以下关于物联网网络层基本概念的描述中错误的是 ( ) 。
A.
物联网的 “ 网络层 ” 也称为 “ 网络传输层 ”
B.
网络层连接感知层与应用层
C.
物联网网络层要正确、快速传输感知层的数据与控制指令
D.
物联网网络层要保证数据传输的安全性
【单选题】听力原文：F: With me today is Tom Henderson from ECN University. Welcome! Tom. M: Thank yon. F: Tom, you recently did a large research study on training in small business concerns. What made you focus on s...
A.
He was managing the training department of a large company.
B.
He was running a training programme at a university.
C.
He was running his own small business.
【简答题】听句子，选出该句的最佳答语。 ( )1. A. Thank you. ( )2. A. No, you can't. ( )3. A. Thank you. ( )4. A. Very delicious. ( )5. A. I learned English last year. B. Yes, I think so. B. I'll be glad to...
【单选题】以下关于网络层基本概念的描述中,错误的是( )。
A.
网络层要实现路由选择、拥塞控制与网络互联
B.
网络层服务依赖于通信子网所采用的技术
C.
网络层向传输层端-端传输连接提供服务
D.
网络层具有跨局域网、城域网与广域网的互联网络寻址能力
【单选题】以下关于网络层基本概念的描述中,错误的是
A.
网路层要实现路由选择、拥塞控制与网络互联
B.
网络层服务要依赖于通信子网所采用的技术
C.
网络层向传输层端 - 端传输连接提供服务
D.
网络层具有跨局域网、城域网与广域网的互联网络寻址能力
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