点P(3,7,5)关于平面π:2x-6y+3z+42=0对称的点P'的坐标为()。 发布时间:2017-12-16 16:46 │ 来源:www.tikuol.com 题型:单项选择题 问题: 点P(3,7,5)关于平面π:2x-6y+3z+42=0对称的点P'的坐标为()。A.AB.BC.CD.D
题型:单项选择题 Some students improve their English listening to the radio.[ ]A. at B. by C. to .D. with 查看答案
题型:单项选择题 Communication networks can be classified in terms of their physical arrangement or (74) Three common (74) are the star, bus, and ting.A.structuresB.topologiesC.protocolsD.frames 查看答案