下列四个命题中,正确的命题是
A.“若![]() ![]() ![]() |
B.“平面向量![]() ![]() ![]() ![]() |
C.若命题![]() ![]() |
D.命题“![]() ![]() ![]() ![]() |
更新时间:2018-11-05 10:14:33
|
相似题推荐
单选题
|
适中
(0.65)
【推荐1】已知命题
“在△
中,若
,则
”,则在命题
的逆命题、否命题、逆否命题中,真命题的个数是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aac95e741a0cda29e2e907e4f114d2e4.png)
![](https://img.xkw.com/dksih/QBM/2016/9/26/1826275741057024/1826275741237248/STEM/ed15dd8083d74bbb9a81260398d434e9.png)
![](https://img.xkw.com/dksih/QBM/2016/9/26/1826275741057024/1826275741237248/STEM/6204df3494d342aba73caea726c5c726.png)
![](https://img.xkw.com/dksih/QBM/2016/9/26/1826275741057024/1826275741237248/STEM/016f3476674548948d98c1f6ef4bffbc.png)
![](https://img.xkw.com/dksih/QBM/2016/9/26/1826275741057024/1826275741237248/STEM/bdf0913d9f4e465d93b56c18cf54deff.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】下列说法正确的是( )
A.若等比数列![]() ![]() ![]() ![]() ![]() ![]() |
B.命题“若![]() ![]() ![]() |
C.“![]() ![]() |
D.命题“![]() ![]() ![]() ![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】已知
,
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd039882414ced3cd59d7a4d5ec76f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520eee8f337cd29b0f9b98967afb8d21.png)
A.必要不充分条件 | B.充分不必要条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】下列说法正确的是( )
A.![]() ![]() |
B.![]() ![]() |
C.若![]() ![]() ![]() |
D.一个四边形是矩形的充分条件是它是平行四边形 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】已知命题
:在△
中,“
”是“
”的充分不必要条件;命题
:“
”是“
”的充分不必要条件,则下列选项中正确的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://img.xkw.com/dksih/QBM/2016/10/10/1826274783690752/1826274783928320/STEM/7cef90df009b426aaf68b6cad2dcf2c2.png)
![](https://img.xkw.com/dksih/QBM/2016/10/10/1826274783690752/1826274783928320/STEM/c55f309a0dba49a99ef4b68483dfde08.png)
![](https://img.xkw.com/dksih/QBM/2016/10/10/1826274783690752/1826274783928320/STEM/d58afc2e65964c85a9fa04109c7e686a.png)
![](https://img.xkw.com/dksih/QBM/2016/10/10/1826274783690752/1826274783928320/STEM/b67795e556c14e6f84e7f8555c980238.png)
![](https://img.xkw.com/dksih/QBM/2016/10/10/1826274783690752/1826274783928320/STEM/df2bd480a36e4a9fb0c7c283c925846e.png)
A.![]() ![]() | B.![]() ![]() |
C.“![]() | D.“![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】已知命题p:函数
(
且
)的图象恒过
点;命题q:已知平面
∥平面
,则直线
∥
是直线
∥
的充要条件. 则下列命题为真命题的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941448ecb3fba5f62f117aeb5b4cdecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eda48853e8bdb7e266370b4e0d5a258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d281e837adac1f8bf88a944e106aa305.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0052c5c876a5351b1fb3a69dba1e6cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c62c14a017007a6bdfe25eada9c433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c62c14a017007a6bdfe25eada9c433.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】已知命题
,命题
,下列四个命题:
,
,
,
中真命题的个数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c262a582bcf054f8373c851dae146ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b891474eb96c2d52b09f2ff6606553c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdd81dfe9e69cb19a3b51f2a945b8ff6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2e4974421a8728f8e2b0a8b068e47a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df555956505b2a9ac2fbc061adcff221.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】给出下列四个命题, 其中正确的命题有
个.
(1)函数
在
上的单调递增区间是
;
(2)
均为非零实数,集合
,则“
”是“
”的必要不充分条件;
(3)若
为真命题,则
也为真命题;
(4)命题
的否定
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89b39952f7eae7b5b2593f141c2e1fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fdb918d8d1aa4173374e97cb01f6be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65666eb8b03220b22c477fee85768b85.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24795dffc6d53301b25d2d4560b6266f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0919730fe0cc524d6f683618089251b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd731967bb86ddf18e9e473daa96041a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
(4)命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e1a823adf4da84a17df009005ea6e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a53574b36265e1be5aed5a1641c2276.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次