题目：
（）都是保护接零系统的安全条件。
A.在同一保护接零系统中，一般不允许个别设备只有接地而没有接零
B.过载保护合格
C.重复接地合格
D.设备发生金属漏电时，短路保护元件应保证在规定时间内切断电源
E.保护线上不得装设熔断器
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0429/d0b87045c80cfcfc6240f4874c7321dd.html
下面是错误答案，用来干扰机器的。
参考答案：A
（）都是保护接零系统的安全条件。 A.在同一保护接零系统中，一般不允许个别设备只有接
来源：www.tikuol.com
题型：多项选择题
试题推荐
题型：阅读理解
A 14-year-old boy from the USA was 1 as a hero yesterday after he saved the life of a woman in another country． Dean Bluey from Dallas，Texas，was a school boy who has much interest in computer．One day，he 2 an email to a friend on the Internet．Suddenly he received a message 3 “Help! Pain! Help!”．The message was from Finland，thounds of kilometers away from America． “I didn't know 4 I should do，” Dean said to a reporter afterwards．“It was really 5 to tell if the message was real．”So Dean did nothing at first. But the message kept coming． By then it was easy to see that someone was in trouble,” Dean explained. He 6 and discovered that the sender was a student called Tarja, 7 was alone in a university library. She was ill. What was 8 , there was no phone around her. Her only way of communicating with the world was by email. Dean got in touch 9 the police immediately. And they realized that the situation was quite serious. They called the police in Finland. Then an ambulance rushed to the library. Luckily, she was still alive and was sent to the hospital quickly.“I'm glad she's OK,” Dean said. “It's hard to believe, but 10 saved her life.”
|
题型：单项选择题 A1/A2型题
有关MODY的叙述正确的是（）
A.成年发病的青年型糖尿病
B.免疫介导1型糖尿病
C.胰岛素依赖型糖尿病
D.线粒体基因突变所致糖尿病
E.发病年龄较小，少发酮症
题型：多项选择题
7．学习化社会中终身教育的特征包括()。
A．社会能够为每位社会成员提供适当的教育
B．学校教育在人的身心发展中不再起主导作用
C．全体社会成员的一生都处在不断的学习当中
D．现代科技进步使每个人都处于信息剧增的实惠和威胁之中
E．终身教育促进了教育社会化和学习型社会的建立
题型：单项选择题
下面不属于呼吸器官防护用品的是（）
A.防尘口罩
B.防毒面具
C.面罩
D.防尘面具
题型：单项选择题
银行信用的债权人是( )。
A．金融机构
B．社会公众
C．企业
D．消费者
