充值 服务号
首页>知识点选题>平行向量(共线向量)
更多:
| 典型试题
显示答案
| 共计 382 道试题
+全部加入试卷
已知平面向量eqId3d906e5d3e694363af29a999ce4871a6eqIdb8affe1d7571428283ab57a95ed2a84aeqId3e6e9cc76211471f8bcb462cec3e1faaeqIde909f230cf3040cbb5bd5e88e7a3032e,在下列命题中:①eqIdacff205d80ed43688c9b215e8ea9406d存在唯一的实数eqId0a6dff3cc3ca44568621204bab332b32,使得eqId043ac7a7e66e4deea37b011b7b2adbc3;②eqIde909f230cf3040cbb5bd5e88e7a3032e为单位向量,且eqId3d906e5d3e694363af29a999ce4871a6eqIdd242bc8d0ccd4cdb9b6f85ec746939f9,则eqId1b641c54d65542cea81634fb53d73ba5;③eqId8ae84ddef6844fc69795d4622a73cece;④eqId3d906e5d3e694363af29a999ce4871a6eqIdb8affe1d7571428283ab57a95ed2a84a共线,eqIdb8affe1d7571428283ab57a95ed2a84aeqId3e6e9cc76211471f8bcb462cec3e1faa共线,则eqId3d906e5d3e694363af29a999ce4871a6eqId3e6e9cc76211471f8bcb462cec3e1faa共线;⑤若eqId80d549f405f24f0f8715e4c1bcc559a0eqId2dd15b7e2918425c851f3318c4f6eb2d,则eqIdf23f50f07c844db7b6cfee33e8bfbee3.正确命题的序号是(    )
A.①④⑤B.②③④C.①⑤D.②③
更新:2020/04/04 难度:0.85 题型:单选题 组卷:863
(多选)下列叙述中错误的是(    )
A.若eqId8f243b0785694e829495e6a506bc9179,则eqId8e7664d5731e43a7885dc6e5ce07db5f
B.若eqId28860dd5f35e4263bec9d9f2c11f2375,则eqIdf087b35a5011425daaafbf14a5e61064eqId5f16eb46594d47b58ffc973b5cc2dd0d的方向相同或相反
C.若eqId28860dd5f35e4263bec9d9f2c11f2375eqId1097284a5d70474e9db2c89cf2c824af,则eqId37a390151dc74633b2964d5aeef50cde
D.对任一向量eqIdf087b35a5011425daaafbf14a5e61064eqId133f7978e4e14fb7850f3c5365106121是一个单位向量
更新:2020/04/01 难度:0.85 题型:多选题 组卷:164
已知eqId09b45c93aaf643c492d60ad935125dddeqIdc3ce22f6ebe24371b3bb7f4d6dacd114eqId1da0f28d13de4404b1255259409bc7adeqIdc91f7835c4144e81ab23732f3d013fc7的夹角为45°,则使向量eqIdeea71846576149729b78e791886da6eceqIdf0455d888267491e974a5c1fac32e0c4的夹角是锐角的实数eqId5f420ef2d0b94c4b8a5d8e20a5d1ce2c的取值范围为______
更新:2020/04/01 难度:0.85 题型:填空题 组卷:41
下列命题中正确的是(    )
A.若eqIdee013874852542daa3f1fba89b142f49,则eqId0b8f4e5f137e4837afbb2b8535113a45B.若eqIdc6b3e9c4d8e14848a7c819d880794b1f,则eqId3535a213490a48ae98c89ac670506064
C.若eqIdee013874852542daa3f1fba89b142f49,则eqId1da0f28d13de4404b1255259409bc7adeqIdc91f7835c4144e81ab23732f3d013fc7可能共线D.若eqId3535a213490a48ae98c89ac670506064,则eqId1da0f28d13de4404b1255259409bc7ad一定不与eqIdc91f7835c4144e81ab23732f3d013fc7共线
更新:2020/04/01 难度:0.85 题型:单选题 组卷:114
下列命题中,真命题是(   )
A.若eqId1da0f28d13de4404b1255259409bc7adeqIdc91f7835c4144e81ab23732f3d013fc7互为相反向量,则eqId3e09384ff83b4a1d8e153ee06315dfa5
B.若eqId1e3c7776d0c142eb98ebcf7be48cd288,则eqId5b9725cff58749eaa1618be19bcf5574eqId2977044a42b24de084a15c344afa34f8
C.若eqId1da0f28d13de4404b1255259409bc7adeqIdc91f7835c4144e81ab23732f3d013fc7都是单位向量,则eqId1c84cfee1b20463c8de6e2e6102a2ba0
D.若eqId4d2187284c5d4de29906363f7d21f60f为实数且eqId0a8973efb7ee4599ad46a252022f09fa,则eqId7ed1f687c28740d9929af01ea5927952eqId5b9725cff58749eaa1618be19bcf5574
更新:2020/03/31 难度:0.65 题型:单选题 组卷:143
已知,eqId06965609258846f996f23b69365f510a,则与eqId3719fcad464c419291c2d254d26e10f2共线的单位向量是( )
A.eqId9d45f42d5a9242cebd4c2c617b4ac29cB.eqIdbdd20168287d408a806ca53afc279a4aeqId7d3802d0b6f34b9386331cdf6310a576
C.eqIdaf7c8de3c9d04182aee9d664a968c0f4D.eqId53c2b077b63e442a8caf42fbd8c79bbceqIdb1206d0b3dae48f6a923452909fcab1b
更新:2020/03/31 难度:0.65 题型:单选题 组卷:372
以下说法正确的是()
A.零向量没有方向
B.单位向量都相等
C.共线向量又叫平行向量
D.任何向量的模都是正实数
更新:2020/03/31 难度:0.85 题型:单选题 组卷:1815
给出下列四个说法:①若eqId1d4351f45c2246f999b173ef175286e7,则eqId203a3e50e6b942aea54d987da40ba3a7;②若eqId413295a324eb4165a96853557b5e5924,则eqId8f243b0785694e829495e6a506bc9179eqId659c1dd3c7ad4d8887e3cce3376fbc2b;③若eqId28860dd5f35e4263bec9d9f2c11f2375,则eqId413295a324eb4165a96853557b5e5924;④若eqId28860dd5f35e4263bec9d9f2c11f2375eqId1097284a5d70474e9db2c89cf2c824af,则eqId37a390151dc74633b2964d5aeef50cde.其中错误的说法有(   )
A.1B.2C.3D.4
更新:2020/03/25 难度:0.94 题型:单选题 组卷:0
已知eqId43ca06d2cf4f43d59058fb3af73272e5eqId1d2f5ecd60b8422b977a1b1688ca41e5,若eqId2fabaf2ac696438aa5e0cf6be50c00d2,则eqIdd33c7c1015944e2b81de4ff8695de842__________.
更新:2020/03/23 难度:0.94 题型:填空题 组卷:27