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【单选题】
使用SQL语句将教师表中所有职称为讲师和助教的记录逻辑删除,正确的命令是( )A.
delete for 职称="讲师" and "助教"
B.
delete from 教师 where 职称="讲师" and "助教"
C.
delete 教师 for 职称="讲师" or 职称="助教"
D.
delete from 教师 where 职称 in("讲师","助教")
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举一反三
【简答题】Amanda didn't get the job because she ______ work at the weekends She said she had such a busy social life.
【简答题】A．The woman dialed a wrong number. B．The woman asked for help. C．The woman didn't get through the phone. D．The woman dialed Jack Easton.
【单选题】—Our class has won the first place of the friendship basketball match. — _______. I was impressed by the performance of your team. [ ]
A.
That's OK
B.
Nothing much
C.
All right
D.
Congratulations
【单选题】已知图示放大电路中的【图片】，【图片】，【图片】，【图片】,晶体管的【图片】，【图片】。那么，该晶体管处于何种状态？。【图片】
A.
放大状态
B.
饱和状态
C.
截止状态
D.
无法判断
【单选题】已知图示放大电路中的【图片】W，【图片】W，【图片】,晶体管的【图片】，【图片】。那么，该晶体管处于何种状态？ 。【图片】【图片】
A.
放大状态
B.
饱和状态
C.
截止状态
D.
无法判断
【简答题】I was impressed by the _____________ (beautiful) and warmth of the people.
【简答题】I was impressed by the ______with which the information would be retrieved. A) base B) taste C) maze D) ease
【单选题】I was impressed by the range of______ accessories of my microcomputer that were available.
A.
acceptable
B.
compulsory
C.
optional
D.
random
【简答题】28 He spoke very slowly, but he still didn’t get his meaning _______. A across B cross C through D though
相关题目：
【单选题】已知图示放大电路中的【图片】，【图片】，【图片】，【图片】,晶体管的【图片】，【图片】。那么，该晶体管处于何种状态？。【图片】
A.
放大状态
B.
饱和状态
C.
截止状态
D.
无法判断
参考解析：
知识点：
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