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【单选题】
设一个线性规划问题(P)的对偶问题为(D)，则关于它们之间的关系的陈述不正确的是()。A.
若(P)无可行解，则(D)也无可行解
B.
(P)(D)均有可行解则最优解
C.
(P)的约束均为等式，则(D)的所有变量均无非负限制
D.
(D)也是(P)的对偶问题
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】在TableLayout中,shrinkColumns属性表示()
A.
TableLayout的列数
B.
收缩指定列
C.
TableLayout最多能加入的列数
D.
拉伸指定列
【单选题】He suggested ______ a lecture given by Professor White on English language learning.
A.
me to attend
B.
my attending
C.
my attention
D.
me attending
【简答题】I didn ' t feel like _______ so he suggested ______- a taxi. [ A] to walk; taking [ B ] walking; taking [ C] to walk; to take [ D] walking; to take
【单选题】He explained to the class what he suggested ____ his idea ____．
A.
to make, accepted
B.
making, agreed to
C.
should make, receive
D.
make, passed
【单选题】He suggested__________ a．1ecture given by Professor Gu on English language learning．
A.
me to attend
B.
my attending
C.
my attention
D.
me attending
【单选题】I didn' t feel like ______,so he suggested______ a taxi.
A.
to walk taking
B.
walking taking
C.
to walk to take
D.
walking to take
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