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【单选题】
充分条件假言命题有p(前件)、q(后件)两种事物情况,只有在p()q()的情况下,命题为假:A.
真、真
B.
真，假
C.
假、真
D.
假、假
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举一反三
【单选题】This is one of the best books__________. A.that have ever been written B.that has ever been written C.that has written D.that have written
A.
that have ever been written
B.
that has ever been written
C.
that has written
D.
that have written
【简答题】综合布线系统的基本含义是什么?与传统布线相比,具有哪些特点?
【简答题】基本型综合布线系统的基本特点是什么?
【简答题】拉深的变形程度用什么来表示?什么是极限拉深系数?哪些因素影响极限拉深系数?
【简答题】综合布线系统的特点是什么
【简答题】影响极限拉形系数的因素:_____________、包角大小和摩擦系数。
【单选题】The English of this composition is excellent .He _______ it himself. A ) can’t have written B ) won’t have written C ) mustn’t have written D ) shouldn’t have written
A.
can’t have written
B.
won’t have written
C.
mustn’t have written
D.
shouldn’t have written
【单选题】Their telephone number is 5675707. Have you ?
A.
written it down
B.
written down it
C.
written them down
D.
written down them
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