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【多选题】
选择性催化还原技术特点有哪些？A.
NOx 削减率可以达到 90-95 ％以上
B.
氨泄漏量低， 0-5ppm
C.
工艺成熟，广泛应用于日本、欧洲的燃气、燃油和燃煤锅炉
D.
无副产品
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反馈参考答案：
举一反三
【单选题】According to the passage, the admission ticket can be used as______.
A.
a piece of card put between the pages of a book so that you can find a page again quickly
B.
a writing pat
C.
a book cover
D.
a tube ticket
【简答题】We can create pictures with feathers and shells. Choose small shells and _______ them on the card. Think about the pattern or picture that you want to make. We can also use ________ to create pictures...
【单选题】To make a birthday card, you can simply cut out some funny or pretty pictures from magazines, them onto a piece of card and then write your message inside.
A.
strike
B.
paste
C.
add
D.
cover
【简答题】To make a birthday card , you can simply cut out some funny or pretty pictures from magazines , them onto a piece of card and then write your message inside.
【单选题】What kind of card does the guest offer?
A.
MasterCard
B.
American Express
C.
VISA
D.
Diner's Card
【单选题】What kind of card will the man probably choose at last?
A.
The handmade card
B.
The card with music
C.
Both
【简答题】To make a birthday card, you can simply cut some funny or pretty pictures from magazines, __________ them onto a piece of card and then write your message inside.A. perceive B. paste C. pause D. peer
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