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【单选题】
设向量【图片】线性无关，向量【图片】可由【图片】线性表示，而向量【图片】不能由向量线性表示，则对于任意常数【图片】，必有（ ）.A.
线性无关
B.
线性相关
C.
线性无关
D.
线性相关
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皮皮学刷刷变学霸
举一反三
【简答题】Manufacturers mentioned in the passage were obliged to make the best of warning labels sb as to ______ .
【简答题】Manufacturers mentioned in the passage were obliged to make the best of warning labels so as to ______.
【单选题】It seems that manufacturers will remain reluctant to make improvements unless______.
A.
they can do so at a very low cost
B.
they find their machines hard to operate
C.
they have difficulty selling their products
D.
they receive a lot of complains about their machines
【单选题】'인백지기천지(人百之己千之)'라는 말이 있다. 이 말은 '다른 사람들이 백을 노력할 때 자신은 천을 노력한다'는 뜻으로 신라시대 유명한 작가가 남긴 말이다. 그 작가의 이름은?
A.
원효
B.
최치원
C.
이규보
D.
박지원
【单选题】It seems that manufacturers will remain reluctant to make improvements unless ______.
A.
they can do so at a very Iow cost
B.
they find their machines hard to operate
C.
they have difficulty selling their products
D.
they receive a lot of complaints about their machines
【单选题】— How do the shops make money if they sell at such low prices? — Manufacturers, it seems, are willing to bring down prices ________ big volume purchases. [ ]
A.
under the name of
B.
on behalf of
C.
in return for
D.
in preparation for
【单选题】It seems that manufacturers will remain reluctant to make improvements unless______.
A.
they can do so at a very low cost
B.
they find their machines hard to operate
C.
they have difficulty selling their products
D.
they receive a lot of complaints about their machines
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