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【简答题】
根据上下文及首字母提示,补全单词,完成短文。 Some people do not like a   l to be out of  place; they are never late for work; they return their books to the library on ti me; they r   2 people's birthdays; and they pay their bills as s   3 as they arrive. Mr. Dodds is such a person. Mr. Dodds works in a bank, and lives on his own. The o   4 family he has is in the next town: his sister lives there with her husband and her son, Mark. Mr. Dodds doesn't see his sister, or her family, from one year to the next, but he sends them Christmas cards, and he has not f   5 one of Mark's seventeen birthdays. Last week Mr. Dodds had quite a surprise. He drove from the bank at the usual time, driving n   6 too slowly nor too fast, he stopped his car as u   7 , out the way of other cars, and he went inside to make his evening meal. Straight away, there was a k   8 at the door, Mr. Dodds opened the door, to find a policeman s   9 on the doorstep. 'What have I done wrong?' Mr. Dodds asked h   10 'Have I driven on the wrong side of the road? Has there been any trouble at the bank? Have l forgotten to pay an important bill?''Hello, Uncle,' said the policeman. 'My name is Mark. ' 1. _____ 2. _____ 3. _____ 4. _____ 5. _____ 6. _____ 7. _____ 8. _____ 9. _____ 10. _____
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【单选题】下列( )是用于表示修改表结构的SQL语句命令动词。
A.
ALTER
B.
CREATE
C.
DELETE
D.
INSERT
【单选题】若氨-空气混合气体中氨的体积分率为0.2,其氨的摩尔比为( )kmolNH3/kmol空气。
A.
0.5
B.
1
C.
0.25
D.
0.333
【简答题】设空气中N 2 、O 2 的体积分数分别为0.8和0.2。在沸腾炉中将硫铁矿用空气充分煅烧: 4 FeS 2 + 11 O 2 → 2 Fe 2 O 3 + 8 SO 2 (1)所得气体中SO 2 的体积分数不超过________%(保留一位小数)。 (2)在实际生产中,接触室SO 2 与O 2 的体积比以1:4较为适合。若沸腾炉通入接触室的炉气中SO 2 、O 2 、N 2 的体积比为8:1:4...
【单选题】修改表结构的SQL语句是( )。
A.
Alter
B.
Create
C.
Update
D.
Drop
【单选题】Pour la huitième personne, ____________.
A.
la relation est bonne
B.
la relation est mauvaise
C.
on ne peut pas le savoir
【单选题】痒疹横痃指
A.
腋窝淋巴结肿大
B.
颈部淋巴结肿大
C.
腹股沟淋巴结肿大
D.
滑车淋巴结肿大
E.
枕后淋巴结肿大
【单选题】修改表结构的SQL语句是
A.
modify table
B.
alter table
C.
change table
D.
drop table
【单选题】头面部长疖子会引起()
A.
腹股沟淋巴结肿大
B.
腋下淋巴结肿大
C.
颈部淋巴结肿大
D.
全身淋巴结肿大
【判断题】UPDATE TABLE是修改表结构的SQL语句。
A.
正确
B.
错误
【简答题】A.颈部淋巴结肿大 B.腋窝淋巴结肿大 C.左锁骨上淋巴结肿大 D.右锁骨上淋巴结肿大 E.腹股沟淋巴结肿大 肺癌转移时常出现
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