名校
1 . 在三棱锥
中,
,且
,
,
分别是棱
,
的中点,下面结论正确的是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64eb3310e5d1aaee7ca7a7889092798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
A.![]() ![]() |
B.三棱锥![]() ![]() |
C.三棱锥![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
名校
2 . 如图,正方体
的棱长为1,则下列四个命题正确的是( )
![](https://img.xkw.com/dksih/QBM/2020/10/15/2571752973082624/2572484774658048/STEM/e9d419fb-5313-4601-869d-ee88f0eaa5f2.png?resizew=222)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://img.xkw.com/dksih/QBM/2020/10/15/2571752973082624/2572484774658048/STEM/e9d419fb-5313-4601-869d-ee88f0eaa5f2.png?resizew=222)
A.若点![]() ![]() ![]() ![]() ![]() |
B.点![]() ![]() ![]() |
C.直线![]() ![]() ![]() |
D.三棱柱![]() ![]() |
您最近一年使用:0次
2020-10-16更新
|
1211次组卷
|
5卷引用:河北省承德第一中学2020-2021学年高二上学期第二次月考数学试题