《低压配电设计规范》规定,采用单芯导线作保护中性线(以下简称PEN线)干线,当截面为

题型:单项选择题 A1/A2型题

问题:

《低压配电设计规范》规定,采用单芯导线作保护中性线(以下简称PEN线)干线,当截面为铜材时不应小于10mm2;为铝材时不应小于()mm2;采用多芯电缆的芯线作PEN干线其截面不应小于4.0mm2

A.18

B.16

C.17

D.20

考点:电气工程师(供配电)110kV及以下变配电所所址选择及电气设备布置110kV及以下变配电所所址选择及电气设备布置题库
题型:单项选择题 A1/A2型题

说“把玩学术”不大合适,显得有点______,但如果是“沉潜把玩”呢其实读书做学问,目的性太强,很难达到痛快淋漓、出神入化的地步,这一点,学问与游戏之道是______的,缺乏足够的好奇心,求知欲,距离感,反而做不好,按照今日不少人的“学者”标准恐怕传统中国读书人,全都是业余性质——可那种“爱美的”读书人,自有______之处。 填入横线部分最恰当的一项是( )。

A.轻浮 相近 可叹

B.轻佻 相通 可爱

C.轻慢 相似 可敬

D.轻视 相仿 可赞

题型:单项选择题 A1/A2型题

满足任一项Duke主要标准即可诊断感染性心内膜炎。

题型:单项选择题 A1/A2型题

施工现场设置的围挡,市区主要路段不宜低于( )m;一般路段不低于( )m。

A.1.8,2.5
B.2.5,1.8
C.2,1.8
D.2,2.5

题型:单项选择题 A1/A2型题

Everybody dreams. Some people think dreams can tell us about the future. Other people think dreams can tell us about ourselves. It’s like our (11) is talking to us.
Why are dreams (12) strange and hard to understand Some people think our brain uses (13) to talk to us. When we fly, swim, or fall down in our dreams, it has a (14) meaning. Lots of doctors help people (15) their dreams. They find that dreams tell us about our (16) and fears.
These days, many scientists (17) that dreams are very important. During the day, we have many (18) , and our brain receives a lot of information. When we dream, our brain (19) information that is not important, and puts the most important information into our (20) . As we learn more about the brain, we may find answers to our questions about dreams.

Ⅰ. 完形填空

/Close
阅读下列短文,从每小题所给的A、B、C、D四个选项中选出一个最佳选项。

A.passes on

B.looks into

C.throws away

D.asks for

题型:单项选择题 A1/A2型题

盗汗的病理属性为

A.血虚,湿
B.阳虚,痰
C.血虚,阴虚
D.阴虚,湿
E.阳虚,血虚

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