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【单选题】
关于颅骨的发育,正确的是
A.
出生囟约为2~2.5cm
B.
前囟一般后6个月闭合
C.
前囟最晚后12个月闭合
D.
后囟一般于6~8闭合
E.
颅骨缝一般后2个月闭合
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参考答案:
举一反三
【单选题】以下哪个语句显示smith\exam1\test.txt?
A.
System.out.println("smith\exam1\test.txt");
B.
System.out.println("smith\\exam1\\test.txt");
C.
System.out.println("smith\"exam1\"test.txt");
D.
System.out.println("smith"\exam1"\test.txt");
【单选题】下列哪个语句打印输出结果为:smith\exam1\test.txt ______________
A.
print("smith\exam1\test.txt")
B.
print("smith\\exam1\\test.txt")
C.
print("smith\"exam1\"test.txt")
D.
print("smith"\exam1"\test.txt")
【单选题】在pH=10的氨性溶液中,用铬黑T作指示剂,用0.020mol/L的EDTA滴定同浓度的Zn2+,终点时p'Zn=6.52,则终点误差为( )。已知lgK'ZnY=11.05。
A.
-0.0l%
B.
-2.0E-4
C.
1.0E-4
D.
2.0E-4
【单选题】在 pH=10 的氨性溶液中,用铬黑 T 作指示剂,用 0.020mol/L 的 EDTA 滴定同浓度的 Zn 2+ ,终点时 pZn′=6.52 ,则终点误差为( )。已知 lg K ' ZnY =11.05 。
A.
-0.01%
B.
-0.02%
C.
0.01%
D.
0.02%
【单选题】在pH=10的氨性溶液中,用铬黑T作指示剂,用0.020mol/L的EDTA滴定同浓度的Zn 2+ ,终点时p Zn′ =6.52,则终点误差为()已知lgK ′ZnY =11.05。
A.
-0.01%
B.
-0.02%
C.
0.01%
D.
0.02%
【单选题】在pH值=10的氨性溶液中,用铬黑T作指示剂,用0.020mol/L的EDTA滴定同浓度的Zn2+,终点时p'Zn=6.52,则终点误差为()。已知lgK'ZnY=11.05。
A.
-1.0E-4
B.
-2.0E-4
C.
1.0E-4
D.
2.0E-4
【单选题】在pH=10的氨性溶液中,用铬黑T作指示剂,用0.020mol/L的EDTA滴定同 浓度的Zn2+,终点时p'Zn=6.52,则终点误差为( )。已知lgK 'ZnY=11.05。 A.-0.0l% B.-0.02% C.0.01% D.0.02%
A.
B.
C.
D.
D
【单选题】以下哪个语句打印smith \ exam1 \ test.txt?
A.
print(“smith \ exam1 \ test.txt”)
B.
print(“smith \\ exam1 \\ test.txt”)
C.
print(“smith \”exam1 \“test.txt”)
D.
print(“smith”\ exam1“\ test.txt”)
【单选题】Which of the following statement prints smith\exam1\test.txt?
A.
System.out.println("smith\\exam1\\test.txt");
B.
System.out.println("smith\"exam1\"test.txt");
C.
System.out.println("smith"\exam1"\test.txt");
D.
System.out.println("smith\exam1\test.txt");
【简答题】Mr Smith goes to the town (城镇) to see his son, Tom. Tom is studying music in a school there. He tells his father he does well and his father is very happy. That evening Mr Smith buys two tickets for a...
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