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【单选题】
幕墙工程施工中立柱和横梁等主要受力构件其截面受力部分的壁经过计算确定且铝合金型材壁厚不应小于(),钢型材壁厚不应小于()。
A.
3.0mm;3.5mm
B.
3.0mm;4.0mm
C.
3.5mm;3.5mm
D.
3.5mm;4.0mm
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皮皮学刷刷变学霸
举一反三
【单选题】一般来说,较难风化的岩石是( )
A.
石灰岩
B.
页岩
C.
花岗岩
D.
大理岩
【多选题】湿式石灰石-石膏法工艺的优点有:
A.
脱硫效率高,一般可达95%以上
B.
对煤种变化的适应性强
C.
属于干法脱硫,因此不消耗水资源
D.
脱硫副产物为石膏,便于综合利用
【单选题】三相半波可控整流电路,电阻性负载,当控制角( )时,整流输出电压与电流波形断续。
A.
α≤30 °
B.
α>30 °
C.
α>60°
D.
α>90°
【判断题】金属应变片的工作原理是基于金属的霍尔效应。
A.
正确
B.
错误
【单选题】事实上,游戏玩家的思考方式与常人有所不同。
A.
In reality, gamers are people who are thinking in different ways.
B.
In reality, gamers are people that are think in different ways.
C.
In reality, gamers are people who are think in different ways.
【单选题】如果某些病原体突破了第一道和第二道防线,即进人人体并生长繁殖,引起感染。有的有症状,就是患病;有的没有症状,称作隐性感染。不论是哪一种情况,机体都经历了一次与病原体斗争的过程,这种专门针对某一种病原体(抗原)的识别和杀灭作用为特异性免疫。譬如得过伤寒病的人对伤寒杆菌有持久的免疫力,那是因为伤寒杆菌刺激机体产生免疫应答,增加了巨噬细胞的吞噬功能,同时在体内还产生抗伤寒杆菌的抗体。人体的免疫系统又能把...
A.
什么是特异性免疫
B.
人体的免疫原理
C.
特异性免疫的形成
D.
特异性免疫的作用
【判断题】_____ Jonathon Stewart believes that it is feasible to judge a hotel by surfing its website and checking for details.
A.
正确
B.
错误
【单选题】Jonathon said he ______ a great time at the party at your place.
A.
'd had
B.
had
C.
'd have
【简答题】营销手段的整体性是指?
【单选题】What does Count Dracula offer as a reason for Jonathon Harker to stay for a time at Castle Dracula?
A.
He wants Harker to remain in the castle as long as possible in order to perfect his English pronunciation.
B.
He wants to complete the transfer of land in England.
C.
Harker can accompany him to England.
D.
The weather is bad, so the Borgo Pass is treacherous.
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