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【简答题】
聚合铝（PAC）是一种新型高效的无机高分子絮凝剂，广泛用于水的处理。用铝灰、铝土矿、铝渣等为原料（主要成分为Al、Al 2 O 3 ）可制取聚合铝。实验步骤如下： 聚合铝（PAC）的分子式为[Al 2 (OH) a Cl b ] m ，聚合铝中OH - 与Al 3+ 的比值对净水效果有很大影响，定义盐基度B=n(OH - )/3n(Al 3+ )，当B=2/3时，b = （填入合适数字）。
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举一反三
【简答题】阅读理解。 1. The picture is about ______. A. fitness clubs B. language clubs C. dance clubs 2. What is the percentage (百分比) of students in the clubs? A. 2.6% B. 13.6% C. 16.9%
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【简答题】案例二 :房屋租赁合同 小陈是一名“毕创族”。毕业那年,他通过众筹的方式和几个合伙人一起投资了一家印刷厂,当上了让人羡慕的小老板。近两年生意做得红红火火,尽管市场经济不佳,订单却有增无减。厂房是从三金公司那儿转租来的,房东是一家国有企业鸟牌公司。小陈特地核实了,鸟牌公司是同意三金公司转租的。可是没想到,春节放假前,工厂突然停电了!原来是三金公司拖欠鸟牌公司租金,催收未果,鸟牌公司不但发了解除合同的...
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【单选题】The writer's opinion about after-school clubs is that______.
A.
some clubs result in competitive pressures
B.
activities in the country are too competitive
C.
clubs should have more subjects for school children
D.
children should attend four clubs at a time
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【单选题】We have many ______. [     ]
A.
sport club
B.
sports clubs
C.
sports club
D.
sport clubs
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【单选题】如果小厂房是租的,一年租金是多少?
A.
0
B.
1
C.
2
D.
3
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【单选题】After school, the students go to different ______. [     ]
A.
club
B.
Club
C.
clubs
D.
Clubs
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【简答题】Welcome to LCF Language Clubs and Music & Gym Clubs ● Learn with songs, stories and s in Fun French or Spanish Clubs ● Affordable after-school care ● Fun music & gym clubs for young children ● Lea...
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【单选题】胰腺炎时增加的是( )
A.
γ-GT1
B.
γ-GT2
C.
γ-GT3
D.
γ-GT4
E.
ALT
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【简答题】小题1:The picture is about ______ A. fitness clubs      B. language clubs       C. dance clubs 小题2:What is the percentage(百分比) of students in the clubs ? A.2.6%         B.13.6%           C.16.9%
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【简答题】阅读理解。 Welcome to LCF Language Clubs and Music & Gym Clubs ● Learn with songs, stories and s in Fun French or Spanish Clubs ● Affordable after-school care ● Fun music & gym clubs for young children...
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【简答题】阅读理解。 1. The picture is about ______. A. fitness clubs B. language clubs C. dance clubs 2. What is the percentage (百分比) of students in the clubs? A. 2.6% B. 13.6% C. 16.9%
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children should attend four clubs at a time
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【单选题】After school, the students go to different ______. [     ]
A.
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C.
clubs
D.
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【简答题】Welcome to LCF Language Clubs and Music & Gym Clubs ● Learn with songs, stories and s in Fun French or Spanish Clubs ● Affordable after-school care ● Fun music & gym clubs for young children ● Lea...
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A.
γ-GT1
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【简答题】小题1:The picture is about ______ A. fitness clubs      B. language clubs       C. dance clubs 小题2:What is the percentage(百分比) of students in the clubs ? A.2.6%         B.13.6%           C.16.9%
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【简答题】阅读理解。 Welcome to LCF Language Clubs and Music & Gym Clubs ● Learn with songs, stories and s in Fun French or Spanish Clubs ● Affordable after-school care ● Fun music & gym clubs for young children...
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