题目内容
(请给出正确答案)
[单选题]
函数y=C-sinx(其中C为任意常数)是微分方程的( ).
A.通解
B.特解
C.是解,但既非通解也非特解
D.不是解
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A.通解
B.特解
C.是解,但既非通解也非特解
D.不是解
第1题
A.the
B.an
C.a
D./
第2题
As it is very ______, we must decide at once what to do.
A.eager
B.anxious
C.urgent
D.tense
第3题
The medicine was very _____, and he recovered at once after taking it.
A.efficient
B.good
C.effective
D.sufficient
第4题
Mr. Jones, ______ life was once very hard, is now very successful in his business.
A.of him
B.his
C.whose
D.by whom
第5题
What city once experimented with a very cheap bus service?
A.London.
B.Rome.
C.Stockholm.
D.None of the above.
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