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【单选题】
沉淀物的粒子大小与以下何者无关？（）
A.
物质本性
B.
温度
C.
搅拌
D.
压力
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【单选题】分别向 Na 3 PO 4 , NaH 2 PO 4 , Na 2 HPO 4 三种溶液中滴加 AgNO 3 溶液 , 其沉淀物是 ( ) 。
A.
(A) 都是 Ag 3 PO 4
B.
(B) 分别是 Ag 3 PO 4 ,AgH 2 PO 4 , Ag 2 HPO 4
C.
(C) 都是 AgH 2 PO 4
D.
(D) 都是 Ag 2 HPO 4
【单选题】Passage Two There are some earth phenomena you can count on, but the magnetic field, some say, is not one of them. It fluctuates in strength, drifts from its axis, and every few 100,000 ...
A.
Polarity Reversal: A Fantastic Phenomenon of Nature.
B.
Measurement of the Earth’s Magnetic-Field Intensity.
C.
Formation of the Two Poles of the Earth.
D.
A New Approach to the Study of Geophysics.
相关题目：
【单选题】分别向 Na 3 PO 4 , NaH 2 PO 4 , Na 2 HPO 4 三种溶液中滴加 AgNO 3 溶液 , 其沉淀物是 ( ) 。
A.
(A) 都是 Ag 3 PO 4
B.
(B) 分别是 Ag 3 PO 4 ,AgH 2 PO 4 , Ag 2 HPO 4
C.
(C) 都是 AgH 2 PO 4
D.
(D) 都是 Ag 2 HPO 4
【单选题】Passage Two There are some earth phenomena you can count on, but the magnetic field, some say, is not one of them. It fluctuates in strength, drifts from its axis, and every few 100,000 ...
A.
Polarity Reversal: A Fantastic Phenomenon of Nature.
B.
Measurement of the Earth’s Magnetic-Field Intensity.
C.
Formation of the Two Poles of the Earth.
D.
A New Approach to the Study of Geophysics.
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