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...
We inoculated 20 Syrian golden hamsters (10–12 weeks old) with 5 × 10450% tissue culture infective dose (TCID50) (n = 4; low-dose) or 5 × 105TCID50(n = 16; high-dose) SARS-CoV-2 by the intranasal route. In the high-dose group, four animals were necropsied on day...
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...
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...
look upC.look after【题目】达人帮忙看看,这题的详细解题过程,感谢A.onB.inC.at17. - What does Mars?A big red of plate of pizza.A.look likeB. look upC.look after 相关知识点: 试题来源: 解析 【解析】答案:A核心短语/句式:look like:像翻译:--火星是什么样子呢?-一大盘红色披萨。解析:根据句...
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