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【单选题】
根据《国务院关于建立统一的城乡居民基本养老保险制度的意见》,下列关于养老保险待遇的说法,错误的是( )。
A.
城乡居民养老保险待遇支付到90岁为止
B.
参保人死亡，个人账户资金余额可以依法继承
C.
个人账户养老金的月计发标准，目前为个人账户全部储存额除以139
D.
城乡居民养老保险待遇由基础养老金和个人账户养老金构成
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【单选题】毛石混凝土组成的墙下条形基础，基础底面宽度b=2.0m，基础顶面的墙体厚度为240mm，基础台阶宽高比的允许值为1:1.25，则该基础的高度至少应大于 mm。
A.
900
B.
1000
C.
1100
D.
1200
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【简答题】H3PO4, H2PO4-, and HPO42- are acids, and their conjugate bases are H2PO4-,HPO42-,and PO43-, respectively. what are the relationship between Ka of conjugate acid and Kb of its conjugate base?
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【简答题】classify each of the following chemical equations as a (i) combination reactions, (ii) decomposition reaction, (iii) displacement reaction, or (iiii)partner-exchange reaction. (a) Fe 3 O 4 + 4H 2 (g) ...
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【简答题】Write appropriate names for the following acids and salts.(all in small letters) a. H3PO4 b. K3PO4 c. K2HPO4 d. KH2PO4 e. H2CO3 f. KHCO3 g. K2CO3
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【单选题】Phosphoric acid is tribasic, with p K a 's of 2.14, 6.86, and 12.4. The ionic form that predominates at pH 3.2 is:
A.
H 3 PO 4 .
B.
H 2 PO 4 – .
C.
HPO 4 2– .
D.
PO 4 3– .
E.
None of the answers is correct.
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【判断题】According to proton theory of acid-base, species of H 3 PO 4 , H 2 O and H 2 CO 3 groups are all not only acids but also bases.
A.
正确
B.
错误
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【单选题】毛石混凝土组成的墙下条形基础，基础底面宽度b=2.0m，墓础顶面的墙体宽度bo=1.0m，基础台阶宽高比1：1，此时基础高度Ho应符合( )。
A.
Ho≥0.35m
B.
Ho≥0.40m
C.
Ho≥0.45m
D.
Ho≥0.50m
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【单选题】毛石混凝土组成的墙下条形基础，基础底面宽度b＝2.0m，基础顶面的墙体宽度 b0＝1.0m，基础台阶宽高比1: 1.00，此时基础高度H0应符合( )。
A.
H0≥0.35m
B.
H0≥0.40m
C.
H0≥0.45m
D.
H0≥0.50m
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【单选题】垂梯遇水事故时,应将垂梯停在进水层的( )层。
A.
同一
B.
上一
C.
上二
D.
以上均可
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【简答题】根据句意及首字母，完成下列单词 1. Let's eat soon. I'm h______. 2. There is a supermarket b______ the post office and the school. 3. He studies hard to i______ his English. 4. Good b______ is half done, so I should w...
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【单选题】毛石混凝土组成的墙下条形基础，基础底面宽度b=2.0m，基础顶面的墙体厚度为240mm，基础台阶宽高比的允许值为1:1.25，则该基础的高度至少应大于 mm。
A.
900
B.
1000
C.
1100
D.
1200
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【简答题】H3PO4, H2PO4-, and HPO42- are acids, and their conjugate bases are H2PO4-,HPO42-,and PO43-, respectively. what are the relationship between Ka of conjugate acid and Kb of its conjugate base?
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【简答题】classify each of the following chemical equations as a (i) combination reactions, (ii) decomposition reaction, (iii) displacement reaction, or (iiii)partner-exchange reaction. (a) Fe 3 O 4 + 4H 2 (g) ...
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【简答题】Write appropriate names for the following acids and salts.(all in small letters) a. H3PO4 b. K3PO4 c. K2HPO4 d. KH2PO4 e. H2CO3 f. KHCO3 g. K2CO3
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【单选题】Phosphoric acid is tribasic, with p K a 's of 2.14, 6.86, and 12.4. The ionic form that predominates at pH 3.2 is:
A.
H 3 PO 4 .
B.
H 2 PO 4 – .
C.
HPO 4 2– .
D.
PO 4 3– .
E.
None of the answers is correct.
查看完整题目与答案
【判断题】According to proton theory of acid-base, species of H 3 PO 4 , H 2 O and H 2 CO 3 groups are all not only acids but also bases.
A.
正确
B.
错误
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【单选题】毛石混凝土组成的墙下条形基础，基础底面宽度b=2.0m，墓础顶面的墙体宽度bo=1.0m，基础台阶宽高比1：1，此时基础高度Ho应符合( )。
A.
Ho≥0.35m
B.
Ho≥0.40m
C.
Ho≥0.45m
D.
Ho≥0.50m
查看完整题目与答案
【单选题】毛石混凝土组成的墙下条形基础，基础底面宽度b＝2.0m，基础顶面的墙体宽度 b0＝1.0m，基础台阶宽高比1: 1.00，此时基础高度H0应符合( )。
A.
H0≥0.35m
B.
H0≥0.40m
C.
H0≥0.45m
D.
H0≥0.50m
查看完整题目与答案
【单选题】垂梯遇水事故时,应将垂梯停在进水层的( )层。
A.
同一
B.
上一
C.
上二
D.
以上均可
查看完整题目与答案
【简答题】根据句意及首字母，完成下列单词 1. Let's eat soon. I'm h______. 2. There is a supermarket b______ the post office and the school. 3. He studies hard to i______ his English. 4. Good b______ is half done, so I should w...
查看完整题目与答案