【单选题】【消耗次数:1】
令前提: <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/151E88A53D653382F547CC2EA5D9CEBC.png data-tex=\forall />x(F(x)<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/F388E7EE9892B38FECEEB653227F230A.png data-tex=\mapsto /> (G(a) <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/D50FEE5510C853C83F78D440017D8E6B.png data-tex=\wedge />R(x))), <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/117E6A630A0200497B87D15B90307923.png data-tex=\exists />xF(x),则下面不是其有效结论的是:
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/117E6A630A0200497B87D15B90307923.png data-tex=\exists />x(F(x) <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/D50FEE5510C853C83F78D440017D8E6B.png data-tex=\wedge />R(x))
G(a)
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/151E88A53D653382F547CC2EA5D9CEBC.png data-tex=\forall />xR(x)
<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/117E6A630A0200497B87D15B90307923.png data-tex=\exists />xR(x)
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随机题目
【单选题】 I go to the gym [填空] a week.
①  one
②  first
③  once
④  two
【单选题】 I [填空] it about two days ago.
①  have
②  has
③  had
④  having
【单选题】 He said the sun [填空] in the east and [填空] in the west.
①  rose,set
②  rises,sets
③  rises,set
④  rise,sets
【单选题】 Tom is not very keen [填空] studying.
①  in
②  on
③  at
④  for
【单选题】 Let’s [填空] this music, shall we?
①  listen
②  listens
③  listen to
④  listens to
【单选题】 Do you want to be responsible [填空] this assignmen?
①  in
②  on
③  at
④  for
【单选题】 You must think of [填空] you can do for your parents.
①  that
②  how
③  what
④  which
【单选题】 Jim is keen [填空] classic music.
①  in
②  on
③  at
④  for
【单选题】 [填空] subject do you like?
①  What
②  Which
③  How
④  Who
【单选题】 He should be responsible [填空] that.
①  in
②  on
③  at
④  for