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【单选题】
好的配风器除了能调节和分配风量外,还应具备的能力有________。1在燃烧器前方产生一个适当的回流区,以保证及时着火和火焰稳定;2油雾在燃烧器出口与空气的早期混合必须良好;3要有足够大的风速,使燃烧后期也有良好的混合作用A.
①②③
B.
①②
C.
①③
D.
②③
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【单选题】Traveling in a humid climate will cause your clothing to become _________ with sweat.
A.
clamped
B.
saturated
C.
insulated
D.
swamped
【单选题】Visiting in humid climate will cause a traveler’s clothing to become saturated with sweat
A.
drenched
B.
watered
C.
stained
D.
heated
【判断题】In the south-eastern United States you can find a humid subtropical climate.
A.
正确
B.
错误
【单选题】听力原文：Mr. Jonathan is a big customer. Don't miss the boat. (A) I'll remind him of the boat departure. (B) I'll try my best to win his trust. (C) I'll book a ticket for him. (31)
A.
B.
【简答题】同步电机的功角 δ 有双重含义,一是 和 之间的夹角;二是 和 之间夹角。
【判断题】China has a typical continental monsoon climate, that is: cold and dry summers and warm and humid winters
A.
正确
B.
错误
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