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搜题
【简答题】
Lei Feng is the ____________of all the people in China.
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】下列液体均处于25℃，有关叙述正确的是 [ ]
A.
某物质的溶液pH<7，则该物质一定是酸或强酸弱碱盐< /div>
B.
pH=4.5的番茄汁中c(H + )是pH=6. 5的牛奶中c(H + )的100倍
C.
AgCl在同浓度的CaCl 2 和NaCl溶液中的溶解度相同
D.
pH =5.6的CH 3 COOH与CH 3 COONa混合溶液中，c(Na + )>c(CH 3 COO - )
【单选题】Which of the following is not part of the 'anti-sprawl movement' as planned by governor Roy Barnes?
A.
The construction of a commuter rail link.
B.
His success in re-election in November.
C.
The initiation of shuttle bus transit.
D.
The allocation of money to widen roads.
【单选题】Black cats were nearly extinct in Europe because _______.
A.
they died themselves
B.
the massive cat-killed campaign lasted for four centuries
C.
no one love cats
D.
rats were extinct
【单选题】下列液体均处于25℃，有关叙述正确的是 [ ]
A.
某物质的溶液pH<7，则该物质一定是酸或强酸弱碱盐< /div>
B.
pH=5的番茄汁中c(H + )是pH=6的某果汁中c(H + )的10倍
C.
AgCl在同浓度的CaCl 2 和NaCl溶液中的Ksp不同
D.
pH=5.6的CH 3 COOH与CH 3 COONa混合溶液中：c(Na + )>c(CH 3 COO - )
【多选题】若N A 表示阿伏加德罗常数的值，下列有关叙述不正确的是（ ）
A.
常温下，28g乙烯与已烯混合物中所含共价键数目为6N A
B.
1molNaHSO 4 熔化后阴阳离子数之和为3N A
C.
2.0gD 2 O的中子数为N A
D.
标况下22.4LNO与33.6LO 2 混合后气体分子数小于2.5N A 电解
【单选题】根据下面内容，回答题： Many superstitious people are afraid of black cats. They believe that black cats have a strange power. If a black cat crosses their path， they think they will have bad luck. Black cats hav...
A.
woman's head and a cat's body
B.
woman's head and a lion's body
C.
cat's head and a man's body
D.
woman's body and a cat's head
【单选题】Which of the following is part of the job description?
A.
Giving blood tests
B.
Supervising research
C.
Repairing equipment
D.
Diagnosing patients
相关题目：
【单选题】下列液体均处于25℃，有关叙述正确的是 [ ]
A.
某物质的溶液pH<7，则该物质一定是酸或强酸弱碱盐< /div>
B.
pH=4.5的番茄汁中c(H + )是pH=6. 5的牛奶中c(H + )的100倍
C.
AgCl在同浓度的CaCl 2 和NaCl溶液中的溶解度相同
D.
pH =5.6的CH 3 COOH与CH 3 COONa混合溶液中，c(Na + )>c(CH 3 COO - )
【单选题】下列液体均处于25℃，有关叙述正确的是 [ ]
A.
某物质的溶液pH<7，则该物质一定是酸或强酸弱碱盐< /div>
B.
pH=5的番茄汁中c(H + )是pH=6的某果汁中c(H + )的10倍
C.
AgCl在同浓度的CaCl 2 和NaCl溶液中的Ksp不同
D.
pH=5.6的CH 3 COOH与CH 3 COONa混合溶液中：c(Na + )>c(CH 3 COO - )