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【单选题】
下列哪个数据库收录了文献的引文信息?A.
SCI
B.
EI
C.
CA
D.
SA
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反馈参考答案：
举一反三
【单选题】三相异步电机调速，（ ）方法是指绕线转子异步电机转子回路中串进可调节的附加电动势来 改变电机的转差，达到调速的目的。
A.
串级调速
B.
变极对数调速
C.
变频调速
D.
定子调压调速
【单选题】I must talk to theboss ______. No one can help me but her.
A.
his
B.
himself
C.
her
D.
herself
【单选题】I don’t like the way____you talk to your mother,you must change____way.
A.
/,that
B.
which,that
C.
in which ,which
D.
that,in which
【单选题】— us a definite answer can’t solve the problem. —I agree with you. Someone must have a talk with him.
A.
Avoiding to give
B.
Avoiding giving
C.
He avoided giving
D.
His avoiding giving
【简答题】可将链接式文件中的文件内容装入到( 1 )的多个盘块中,并通过将它们构成一个队列,( 2 )链接文件具有较高的检索速度。
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