1 . 如图,已知两座山的海拔高度
米,
米,在BC同一水平面上选一点
,测得
点的仰角为
点的仰角为
,以及
,则M,N间的距离为____________ 米.(结果保留整数,参考数据
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9cbea10075834324a661a4514c4e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/664ef8298f9c6eef667861e1da9bd8a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96826763a0ea52872b73c25460e2d973.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c030b25575d683af91c06e6a3e4f463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08fddda4936a9be50e32b18b4c79e8b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e37ef1a48dbbf1c399ece970d3a92c.png)
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2 . 设
是一个随机试验中的两个事件,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bae7c922745a40328e4a1b6d1d4dac6c.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b08478fcdec055054697facc4a570f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bae7c922745a40328e4a1b6d1d4dac6c.png)
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3 . 已知圆
的圆心为点
,直线
与圆
交于
两点,点
在圆
上,且
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb53a5e73f95e3f46a34965c5c0ac73.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab468a0448699f70470931b66a6cfcb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44c273a185a3b6cb29c26455566408ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdcc48fa51cc21ef97c330a8f8feb13a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ec9a0ef5960a3c1386b304c5f8fb96d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb53a5e73f95e3f46a34965c5c0ac73.png)
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4 . 已知实数
,对
恒成立,则
的取值范围为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b44ff75c0a450bd10443d9e5a19e4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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5 . 写出
的展开式的第4项的系数:______ .(用数字表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/805039a83c8d4abbe6c74821392cd481.png)
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6 . 在棱长为4的正方体
中,点
是棱
的中点,则四面体
的外接球的体积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27ae22ad74b412e6d71ec1245f802db.png)
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7 . 已知实数
,且满足
,当
取得最大值时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5154ce098d83928b357e01070762413a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360ff131c51a4ef6745538c18cec92c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dcf600445a2eeef7e18c8feb4b0e8bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8d40e257f9c446b8e30fa841b74bbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5154ce098d83928b357e01070762413a.png)
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8 . 已知在正三棱台
中,
分别为棱
的中点,平面
、平面
与平面
交于点
.记
和
分别表示三棱锥
和三棱锥
的体积,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e68300e9ff6b6ea7943bdd2b3658b2c.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8dff0b92d9c79e26602bd28455d705a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1921b3559a5f73426f0d78e401ecc75b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20af148464904e21f4374cc8fb886fba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4764374bd2fb78e59cd0b283637baeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63055a5d6916f99d07fede49120753f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4278c0911e7df78965e78cff69cac5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d39e8a65bdb732cea1eef3820e522f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e68300e9ff6b6ea7943bdd2b3658b2c.png)
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9 . 化简![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbeee29a83e92ba7d4e6b9694ef11be5.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbeee29a83e92ba7d4e6b9694ef11be5.png)
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10 . 如图所示为函数
的图象,
是
的导函数,
和
分别为极大值点和极小值点,则不等式
的解集为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090a91e4f3c8930674f98a9fa527709b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b650820d7bed48ed67a2869ad8c65ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e70dc53b4ce33d99f43389924a81bf79.png)
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