CBAA's 50th Anniversary celebration, CBAA 2011, held in Calgary July 6 and 7 was the place to be for everyone involved in Canada's business aviation community. "The CBAA convention and trade show is known as a place where relationships are built and business gets done," said Sam Bar-one...
【题目】如图,已知∠AOC=∠BOD=90°,∠AOD=120°,则∠Boc的度数为()CBAA.60°B.50°C.45°D. 30° 相关知识点: 试题来源: 解析 【解析】【答案】A【解析】∵∠AOC=∠BOD=90° ,∠AOD=120°,∴∠BOC=∠AOC+∠BOD-∠AOD =180°-120°=60°故选:A。【余角和补角的概念】1.余角:如果两个角...
2.如图22-Z-1,AB是 ⊙O 的切线,B为切点,AO与 ⊙O 交于点C.若∠BAO=40°,则∠OCB的度数为CBAA.40°B.50°图22-Z-1C.65°D.
百度试题 结果1 题目【题目】如图Z2-5-3,直线 a∥b ,∠ACB=90°,若∠1=35°,则∠2等于(A. 65° B.50°C.55°D.60°CBAa图Z2-5-3 相关知识点: 试题来源: 解析 【解析】C 反馈 收藏