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【单选题】
两个除尘效率分别为80%和70%的除尘器串联使用,则总除尘效率为( )。A.
80%
B.
90%
C.
94%
D.
56%
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举一反三
【单选题】In the writer's view, the more new goods there are,______.
A.
the less pollution we have
B.
the harder pollution can be done away with
C.
the more pollution there will be
D.
the more easily pollution can be controlled
【单选题】In the distributor-less ignition system, the spark timing is controlled by ________.
A.
ICU and coil packs
B.
ICU and ECU
C.
coil packs and ECU
D.
distributor
【简答题】What is the real purpose of travel? Travelling to a new place can make us less controlled by familiar cognitive ________ that imprison us. As a result, we can better combine the new with the old, the ...
【单选题】( )是管道施工图中最基本的一种图样,它主要表示设备、管道在建筑物内的平面布置,管线的走向、排列和各部分的长宽尺寸,以及每 根管子的坡度和坡向,管径和标高等具体数据及其相对位置。
A.
管道平面图
B.
管道立面图
C.
管道剖面图
D.
系统图
【多选题】The less controlled activities may include ____ and so on.
A.
role-palys
B.
gap-fills
C.
drills
D.
sentence completion
【简答题】Owing to the fact that most travel is _______, we just travel following our heart. Most people travel for the sake of __________, but their mind tends to solve the stubborn ___________ issues while on...
【判断题】The second P in PPP means practing the language in a less controlled condition.
A.
正确
B.
错误
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