建筑物直通室外的安全出口上方,应设置宽度不小于( )的防火挑檐。A.0.5m B.

题型:单项选择题

问题:

建筑物直通室外的安全出口上方,应设置宽度不小于( )的防火挑檐。

A.0.5m

B.1m

C.1.1m

D.1.4m

考点:注册电气工程师供配电专业注册电气工程师(供配电专业)
题型:单项选择题

在销毁保管期限届满的价格鉴证档案时,要把其中的()取出,整理立卷并永久保存。

A.价格鉴证结论书

B.复核裁定书

C.调整书

D.专业调查资料

E.结论性法律文书

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有一种自行车安装有激光系统,人在晚上骑车时,该系统发出的激光在路面上形成“虚拟自行车道”,如图所示.它可以提醒来往车辆,注意行车安全.下列说法正确的是

[ ]

A.激光在真空中不能传播

B.激光在空气中的传播速度是340m/s

C.司机能看见“虚拟车道”是激光在路面上发生了镜面反射

D.激光是一种电磁波

题型:单项选择题

根据MRI表现考虑为何种疾病是()

A.羊瘙痒病

B.皮质-纹状体-脊髓变性

C.进行性多灶性白质脑病

D.亚急性硬化性全脑炎

E.进行性风疹全脑炎

题型:单项选择题

钛和钛合金焊接时,只要对焊接熔池严加保护就可以了。()

题型:单项选择题

Tragedies have a way of making people rethink their (1) and find a new focus. They make people think about what a society needs in order to (2) . The notion of doing something to take control of society or of our fate as humans might be dated back to ancient times of the (3) . Now, in the early 21st century, " social (4) " are trying to take back some (5) over society’s direction once again. A social inventor is not necessarily a social (6) , a social (7) or someone who works in a (8) industry or invents new (9) and consumer products. A social inventor is using the power of (10) thinking, to come up with ideas for (11) in certain communities or sections of society. They have a vision of a (12) world and create new systems or practices. Their ideas may seem (13) or impossible. They are usually quite (14) people. But some of these creative thinkers have (15) and quietly changed the way we live. Social inventions do not have to be (16) . Sometimes they are new (17) for neighborhoods or communities, or even very (18) ideas. The idea of social inventions has become so popular in recent years. It shows how much people desire to make a (19) in our society and not remain (20) .

Tragedies have a way of making people rethink their (1) and find a new focus. They make people think about what a society needs in order to (2) . The notion of doing something to take control of society or of our fate as humans might be dated back to ancient times of the (3) . Now, in the early 21st century, " social (4) " are trying to take back some (5) over society’s direction once again. A social inventor is not necessarily a social (6) , a social (7) or someone who works in a (8) industry or invents new (9) and consumer products. A social inventor is using the power of (10) thinking, to come up with ideas for (11) in certain communities or sections of society. They have a vision of a (12) world and create new systems or practices. Their ideas may seem (13) or impossible. They are usually quite (14) people. But some of these creative thinkers have (15) and quietly changed the way we live. Social inventions do not have to be (16) . Sometimes they are new (17) for neighborhoods or communities, or even very (18) ideas. The idea of social inventions has become so popular in recent years. It shows how much people desire to make a (19) in our society and not remain (20) .

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