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【简答题】
用 A.质子数、 B.中子数、 C.最外层电子数、 D.电子层数填写下列空格。 (1)原子种类由________决定。(填写字母序号,下同) (2)元素种类由________决定。 (3)元素有无同位素由________决定。 (4)1~18号元素的化合价主要由________决定。 (5)元素的化学性质由________决定。
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举一反三
【单选题】算法指的是(31)。
A.
计算机程序
B.
解决问题的计算方法
C.
排序算法
D.
解决问题的有限运算序列
【单选题】算法指的是(14)。
A.
计算机程序
B.
解决问题的计算方法
C.
排序算法
D.
解决问题的有限运算序列
【简答题】116× s1196s 11ss69 .
【简答题】请写出 CL 云码口诀的第 4 句(只写 7 个字,不能出现其他符号)
【单选题】等差数列{a n }中,a 10 <0,a 11 >0且a 11 >|a 10 |,S n 为其前n项和,则(  )
A.
S 1 ,S 2 ,…,S 10 都小于0,S 11 ,S 12 ,…都大于0
B.
S 1 ,S 2 ,…,S 19 都小于0,S 20 ,S 21 ,…都大于0
C.
S 1 ,S 2 ,…,S 5 都小于0,S 6 ,S 7 ,…都大于0
D.
S 1 ,S 2 ,…,S 20 都小于0,S 21 ,S 22 ,…都大于0
【简答题】What's for breakfast? 2.What's the weather like? 3. Why doesn't Robbie go to the baseball ? 4. When did Philip last go fishing with Robbie? 5. When Philip went fishing with Grandpa, what happened ...
【单选题】Which of the following statements about Greece is INCORRECT?
A.
It gets an almost $400 billion's debt.
B.
It has already got more than $50 billion's bailout.
C.
Greek workers protest against some of the cutting spending plans.
D.
It was not the only country whose investment ratings went down.
【简答题】等差数列{a n }中,S n 是其前n项和,a 1 =-11, S 10 10 - S 8 8 =2,则S 11 =______.
【单选题】会计人员陈某认为,会计工作只是记记账、算算账、与单位经营决策关系不大.没有必要要求会计人员“叁加管理”。陈某的观点是正确的。( )
A.
正确
B.
错误
【多选题】A: Excuse me, where is Mike? B: 1 _________________ He wants to visit the Great Wall. A: Really? 2_________________ B: He went there last Friday. A: 3_________________ B: No, he’s never been there bef...
A.
You’re welcome.
B.
When did he go ?
C.
Has he been there before?
D.
H e has gone to Beijing , China.
E.
Whom did he go there with?
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