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【单选题】
建筑外窗是建筑保温的薄弱环节,下列措施哪项不能提高门窗节能。( )
A.
采用普通铝合金玻璃窗
B.
利用空气间隔层增加窗户的传热阻
C.
选用优质密封橡胶条
D.
采用铝合金断桥中空玻璃窗
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举一反三
【单选题】以下萃取溶剂中极性最大的是( )。
A.
乙醇
B.
甲醇
C.
正丁醇
D.
E.
乙醚
【简答题】交通流的基本参数有三个:交通流量、速度和密集度,也称为交通流三要素。试分别给出它们的概念和计算公式。
【简答题】Ex. 1.2 Replace the underlined part in each of the following sentences with a word or phr box below. Write your answer in the brackets. Change the form where necessary. adore bet by the day compen...
【简答题】交通密度的概念。
【简答题】2 Replace the underlined part in each of the following sentences with a word or phrase from the box below. Write your answer in the brackets. Change the form where necessary. adore bet by the...
【简答题】Complete the following sentence by filling in each blank with an appropriate word. Change the form where necessary. crop up; attune to; opt for; on the fly; accustomed to; stick to; mess up; bet on; f...
【简答题】2 Replace the underlined part in each of the following sentences with a word or phrase from the box below. Write your answer in the brackets. Change the form where necessary. adore bet by the day...
【简答题】Replace the underlined part in each of the following sentences with a word or phrase from the box below. Write your answer in the brackets. Change the form where necessary. adore bet by the ...
【简答题】Complete the following sentence by filling in each blank with an appropriate word. Change the form where necessary. crop up; attune to; opt for; on the fly; accustomed to; stick to; mess up; bet on; f...
【单选题】以下萃取溶剂中极性最大的是
A.
乙醇
B.
甲醇
C.
正丁醇
D.
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