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【简答题】
在废水处理过程中,厌氧处理法相对氧处理法有哪些优缺点。
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参考答案:
举一反三
【简答题】横线里最大能填几? ______×2<15 9×______<60 5×______<44.
【单选题】A. sandB. stoneC. tree D. wall
A.
44. A. sand
B.
stone
C.
tree
D.
wall
【简答题】横线里最大能填几? ______×6<49 8×______<63 ______×5<44.
【单选题】加权算术平均数的大小受各组
A.
次数的影响最大
B.
标志值的影响最大
C.
权数的影响最大
D.
标志值和次数的共同影响
【单选题】加权算术平均数的大小受各组
A.
次数(f)的影响最大
B.
标志值(x)的影响最大
C.
权重系数(f/∑f)的影响最大
D.
标志值(x)和次数(f)的共同影响
【多选题】齿轮传动按润滑方式不同可分为()。
A.
开式
B.
半开式
C.
闭式
D.
半闭式
E.
以上说法都对
【单选题】_____ the _____ of modern industry, the pollution is becoming more and more serious.A.With; deve
A.
44. _____ the _____ of modern industry, the pollution is becoming more and more serious. A.With; developing
B.
Under; development
C.
With; development
D.
Under; developing
【简答题】slip; slide; glide Canadians living in that area often wear snowshoes in winter to avoid ___. He quickly ___ down the tree when the bear went out of sight. It's a lot of fun ___ down the sand hill. It...
【单选题】It's 7: 44. Time ____________ breakfast. [     ]
A.
to
B.
for
C.
at
D.
in
【简答题】 Passage 2 When people have more money than they need for ordinary ( 平常的 ) things, they sometimes spend their spare money in traveling and seeing other parts of the world. European ( 欧洲的 ) people go ...
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