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【单选题】
某市2017年耗煤量20万吨，燃油15万吨，燃气300万立方米，该地区燃煤含硫率应不得高于0.7%，燃油含硫率为0.1%，天然气中硫化氢的体积浓度为0.03%，请判断该地区二氧化硫产生量为多少？A.
5510t
B.
2542.57t
C.
25425.7t
D.
55110t
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举一反三
【简答题】For the circuit, find R a b = ______ Ω 。
【单选题】It is reported that there is a $1000 _________ for any information that helps police find the lost relic.
A.
price
B.
reward
C.
pay
D.
prize
【单选题】Which of the following situations is among the troubles print has?
A.
R is dear to find printed materials.
B.
Frequent editing is needed for better layout.
C.
Paper is passed around quickly.
D.
The space to restore articles is not enough,
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