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【单选题】
下列关于元素第一电离能的说法不正确的是 ( )A.
钾元素的第一电离能小于钠元素的第一电离能，故钾的活泼性强于钠
B.
因同周期元素的原子半径从左到右逐渐减小，故第一电离能必依次增大
C.
外围电子排布为 ns 2 np 6 ( 当只有 K 层 1s 2 ) 的原子，第一电离能较大
D.
对于同一元素而言，原子的电离能 I 1 ＜ I 2 ＜ I 3 ＜ …
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A.
have; am going
B.
have; was going
C.
had; was going
D.
had; am going
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【单选题】下列程序的运行结果为()。 #include using namespace std; class A{ int a,b; public: A(int i,int j){ a = i; b = j; } void move(int x, int y){ a += x; b += y; } void show(){ cout<<"("<
A.
(1,2) 5,6 (6,9)
B.
(1,2) (5,6) (6,9)
C.
(1,2) 3,4 (6,9)
D.
(1,2) 5,6 (3,4)
【简答题】1 separate and different in a way that is clear 2 the full range of things that sb. or sth. can do 3 to gently move your hand over skin, hair, or fur 4 to develop and become different after being th...
【多选题】rusted | impersonal| embarrassment | mess | upstairs She left a__1__. Her bathroom is an__2__ of damp towels, __3__shaving blades , hair in the sink, and nearly empty tube s of toothpaste . I bring a ...
A.
mess
B.
embarrassment
C.
rusted
D.
upstairs
E.
impersonal
相关题目：
【单选题】下列程序的运行结果为()。 #include using namespace std; class A{ int a,b; public: A(int i,int j){ a = i; b = j; } void move(int x, int y){ a += x; b += y; } void show(){ cout<<"("<
A.
(1,2) 5,6 (6,9)
B.
(1,2) (5,6) (6,9)
C.
(1,2) 3,4 (6,9)
D.
(1,2) 5,6 (3,4)