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1 . 在eqId64b9b599fdb6481e9f8d9a94c102300b中,eqIdf5614acf63754e8a927e0bd2ba947737eqId46af16b0b98e4752aaafd30c6e00f11a,则eqId4f0de3619ed04bf0a87dc349a0cf2e72(   )
说明: figure
A.eqIdbef81c21fd4e470eabbb162529bee989B.eqIdec4b10d28014438bb511e1b90286dddb
C.eqIdf761eacb388b44e78fee26f417511044D.eqId8c622e0c0b014406a4bf29a4b4beee84
2 . 已知eqId64b9b599fdb6481e9f8d9a94c102300b外接圆的圆心为O,半径为1.设点O到边eqId0627be51821d4be7b3e024a354815d64eqId1eb64606273a4d63bfa90e56f9a3f5c2eqId99a3187c2b8f4bcc9703c74c3b72f1f3的距离分别为eqIdcb9b2b8bd99c447bbccaaa8a411aa71beqIdef8988307d4c45ce94db1755a94bb661eqId8f19c84fd7204c62a9cc886c9413e214.若eqId3838902fa64d4155a0efa77f8df04bae,则eqIdd43cca36ae9445398483e0c61e8ec4b9(   )
A.eqId44aff622a095465082b61837e24439e7B.1C.eqId6b2724baa0064c51b2ba39f5b281a1ebD.3
3 . 如图,在eqId64b9b599fdb6481e9f8d9a94c102300b中,eqId0cd8063abf2b458f80091bc51b75a904eqId93cbffaa5ae045d6ac45d1e979991c3aeqId63db14a5b4334f3ea583c8fb12b0d175分别是eqId99a3187c2b8f4bcc9703c74c3b72f1f3eqIdcf2da96900c948a1b3ce7cbfd420c080eqId0627be51821d4be7b3e024a354815d64的中点,则(   )
说明: figure
A.eqIdba6b8e079bb64688b98d588211489813B.eqIdb19e9260fd834d9d8ef23871ec85c891
C.eqId98a03a39376e4b8387eeb611ce5374f1D.eqIdabed856aef19464ba9d48cc12e733d8a
4 . 在平行四边形ABCD中,eqId9755c9db7a8a4a4baf6c91c8b5a7c3d8(   )
A.eqId3e230a3cc22b4a598a3bb1ba60179b26B.eqId75a89f98c8064cabb36bf6eb0a7448d8C.eqIdbc1c67d09ed4407eb4eb484fdce5f55dD.eqId4ddba6db3da948fbad12a7b08aa05161
5 . 如图,已知边长为eqId70a27b6ddf6b478285353abb3b1f3741的正三角形eqIda670baf5d73f4d7689915a00c51820f2内接于圆eqId2efda802d5534f6d92d9f8af7aaec28beqId0cd8063abf2b458f80091bc51b75a904eqId0627be51821d4be7b3e024a354815d64边中点,eqId93cbffaa5ae045d6ac45d1e979991c3aeqId5feb0beb91ac469387cde67918ea7f5c边中点,则eqId2e333daf4ca14d76a33898b11531a467________
说明: figure
6 . 当两人提起重量为eqIdf05e9b23d71047ba8eeb0e49a8ef6189的旅行包时,夹角为eqId6c9518e43fd5459798a30cfc10026e3c,两人用力都为eqId084dac884a8c44a3b2d1d7f827774365,若eqId89b1b1d07d68427793afbdc201856980,则eqId6c9518e43fd5459798a30cfc10026e3c的值为(   )
A.eqId5ad58f952a4542f689f5ee8aa9946f25B.eqId1a06b2701ed24e619837f7dc479f5e9dC.eqId4f1f8e9318304058ad58388cc72955aeD.eqId71dab503f7b140f0a2bdd598d1f21f8e
7 . 平行四边形eqId5ce7a06ae7a34393b92b5277978ac014的对角线相交于点eqId2efda802d5534f6d92d9f8af7aaec28b,设eqId9f7405ab55f141789b76d3eda62dc54aeqIdfc075ca3f857485d81374d0080cde924,则向量eqIdc53c8ea422744561a755d950fbf42980(   )
A.eqId89f0386d81824fd7bb0f81185ada7cb1B.eqId48fc30e5cf254c12b0d60cd9c75518dd
C.eqId6d79876782654856af948072e6af5f01D.eqIda707363ca9d54a54a615bc60ac3190b0
9 . 点eqId2efda802d5534f6d92d9f8af7aaec28b是平行四边形eqId5ce7a06ae7a34393b92b5277978ac014的两条对角线的交点,eqId0bc11a311e6c45e09fe51e9cc866686f等于(   )
A.eqId25b9116216b546ea90c6bf9ae3a388faB.eqId92159b9ad54145c3b5b3d765fba56026C.eqId1574914ce45c413a96affcf6d235ba49D.eqId555a2252eb7d4db9927206f5ad7a9e86
10 . 设G为△ABC的重心,若eqId1015944b37eb48bb8d5266bec0f3faa3,则eqId930f80e5c0944f67aede8c923adec8ee的取值范围为(   )
A.(-80,160)B.(-80,40)
C.(-40,80)D.(-160,80)
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