设OB=OD=x,则有BD=2x,BN=OB+ON=x+1,DN=x-1,∴x+1=2(x-1),解得:x=3,∴BD=2x=6;(3)∵△MND∽△CNB,且相似比为1:2,∴MN:CN=DN:BN=1:2,∴S△MND= 1 2S△CND=1,S△BNC=2S△CND=4.∴S△ABD=S△BCD=S△BCN+S△CND=4+2=6,∴S四边形ABNM=S△ABD-S△MND=6-1=5. (1)...
8.如图.已知O为直线AD上一点.OB是∠AOC内部一条射线且满足∠AOB与∠AOC互补.OM.ON分别为∠AOC.∠AOB的平分线.(1)∠COD与∠AOB相等吗?请说明理由,(2)若∠AOB=30°.试求∠AOM与∠MON的度数,(3)若∠MON=55°.试求∠AOC的度数.
1 2 ∠AOB,然后计算出∠BOC=80°,再根据平角定义可得∠AOB=∠COD,进而得到∠AOB=50°. 解答:解:(1)∵∠AOC与∠AOB互补, ∴∠AOC+∠AOB=180°, ∵∠AOC+∠DOC=180°, ∴∠COD=∠AOB; (2)∵OM和ON分别是∠AOC和∠AOB的平分线, ∴∠AOM= ...
彩色:0.0005 Lux @(F1.0,AGC ON),0 Lux with Light 通道2: 0.01 Lux @(F1.2,AGC ON) 快门1 s~1/100,000 s 慢快门支持 P/N制P制 宽动态数字宽动态 调节角度筒机:垂直方向:-30°~45°;水平方向:0°~360° 光伏板:垂直方向:30°;水平方向:0°~358° 镜头 焦距&视场角通道1: 4 mm @F1.0,...
(2)在AC上分别截取AM、CN,使AM=AE,CN=CD,连接OM,ON,证△AEO≌△AMO,△DCO≌△NCO,推出∠EOA=∠MOA,∠CON=∠COD,OD=ON,求出∠MON=∠MOA=45°,根据角平分线性质求出MK=ML,根据S△AOM= 1 2AO×MK,S△MON= 1 2ON×ML求出 AO ON= AM MN,求出 AO ON= AM MN= 3 1,推出AN= 4 3AM= 4...
型号 钮子开关E-TEN 1121 ON-ON电源开关3脚2档12 【品名】钮子开关 12mm 【型号】E-TEN 1121 ON-ON 3脚2档 价格说明 价格:商品在爱采购的展示标价,具体的成交价格可能因商品参加活动等情况发生变化,也可能随着购买数量不同或所选规格不同而发生变化,如用户与商家线下达成协议,以线下协议的结算价格为准,如...
sys.exit(1) def rulesetCreation(myClaimType, rulesetFileName, idpEntityID, idpScope, persistent=False): """ Creates Identity Provider ruleset file with NameID creation based on transient-id by default """ try: # load template from configured file ruleBase = Template(open(ruleset...
RABAT, April 26 (Xinhua) -- Morocco's Wydad Casablanca defeated Mamelodi Sundowns of South Africa 2-1 on Friday night in the first leg of the African Champions League semifinals. At Complex Moulay Abdellah in Rabat, Salaheddine Saidi gave the hosts an early lead in the 26th minute, but...
There's an 'open pad' for left thumb, and three 'valve pads' which correspond to trumpet valves 1, 2, and 3 and drop 2, 1, and 3 half-steps, respectively. The vertical divisions are based on the harmonic series and what you would play if you slurred continuously all the way up or...
这个不必过于担心,达不到中毒剂量,可能会有一些胃肠道不适反应,以后注意就可以。 患者 2岁多宝宝误吃了十多粒维生素ad滴剂,有什么影响吗(女,2岁2个月) 张伟医生 你好,这个不必过于担心,达不到中毒剂量,可能会有一些胃肠道不适反应,以后注意就可以