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某溶液中含有KCl、KBr和K2CrO4,浓度均为0.010mol.L-1向溶液中逐滴加入0.1 mol.L-1AgNO3溶液时,最先和最后沉淀的是()
- A、AgBr和Ag2Cr2O4
- B、Ag2CrO4和AgCl
- C、AgCl和AgBr
- D、AgCl和Ag2CrO4
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更多 “某溶液中含有KCl、KBr和K2CrO4,浓度均为0.010mol.L-1向溶液中逐滴加入0.1 mol.L-1AgNO3溶液时,最先和最后沉淀的是()A、AgBr和Ag2Cr2O4B、Ag2CrO4和AgClC、AgCl和AgBrD、AgCl和Ag2CrO4” 相关考题
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class Super { public int getLenght() { return 4; } } public class Sub extends Super { public long getLenght() { return 5; } public static void main(String[] args) {Super sooper = new Super(); Sub sub = new Sub(); System.out.println( sooper.getLenght() + “,” + sub.getLenght() ); } } What is the output? ()A、 4,4B、 4,5C、 5,4D、 5,5E、 Compilation fails.
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pCHsub4/sub、SOsub2/sub/pC
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p1Ksubm/sub/pB
p2Ksubm/sub/pC
p3Ksubm/sub/pD
p4Ksubm/sub/pE
p5Ksubm/sub/p
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4, 4B
4, 5C
5, 4D
5, 5E
The code will not compile.
考题
单选题class Super { public int getLenght() { return 4; } } public class Sub extends Super { public long getLenght() { return 5; } public static void main(String[] args) {Super sooper = new Super(); Sub sub = new Sub(); System.out.println( sooper.getLenght() + “,” + sub.getLenght() ); } } What is the output? ()A
4,4B
4,5C
5,4D
5,5E
Compilation fails.
考题
单选题A
pIsub2/sub=Isub3/sub/pB
pIsub2/sub=4Isub3/sub/pC
pIsub2/sub=2Isub3/sub/pD
pIsub3/sub=4Isub2/sub/p
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msub0/sub<msube/sub<(xB
msub0/sub=msube/sub=(xC
msub0/sub>msube/sub>(xD
msube/sub<msub0/sub<(x
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多选题1. class Super { 2. private int a; 3. protected Super(int a) { this.a = a; } 4. } ..... 11. class Sub extends Super { 12. public Sub(int a) { super(a); } 13. public Sub() { this.a= 5; } 14. } Which two, independently, will allow Sub to compile?()AChange line 2 to: public int a;BChange line 2 to: protected int a;CChange line 13 to: public Sub() { this(5); }DChange line 13 to: public Sub() { super(5); }EChange line 13 to: public Sub() { super(a); }
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