氯化铵和氯气

在三角形ABC中,角A、B、C对应的边分别为a b c ,且满足4sin^2(B+C)-cos2A=7/2 1）角A的度数2）求（b+c)/a的取值范围 but today she went to school at 7:40 Betty got up too late today,so she went to school ______.A.hurry B.hurried C.in a hurry D.hurries 甲、乙两个数,如果甲数加上320就等于乙数,如果乙数加上460就等于甲数的3倍.两个数各是多少?(要用方...甲、乙两个数,如果甲数加上320就等于乙数,如果乙数加上460就等于甲数的3倍.两个数各是 甲乙两个数,如果甲数加320就等于乙数,如果乙数加上460就等于甲数的3倍,两个数各是? 英语翻译EAU THERMALEAveneDiacnealSoin regulateur et lissant despeaux a tendance acneiqueRetinaldehyde C.T.0.1%Acide glycolique 6%Treatment care foracne prone skinsmoothes skin surface 英语翻译tre minimale mensuelle de l'ordre de 30% du SMIC,ce ontant minimal,n'entrainera aucune charge supplementaire pour mon etablissement.Fait a:_______ le:_________Le directeur de l'entreprise ou organismeLe responseable de la formation a l'un 煤的总量一定,每天烧煤量和能够烧的天数成（）关系? 有点看不懂,麻烦知道的朋友解释一下. 我所说的是扑克占卜的《刀牌》并不是打牌的《牌刀》谢谢大家! 意思一样 (1)She always comes to school late.=She _______ always _______ for school.(2)Do you have a map of China?=_________ you a map of China? Kate's never late,_______ ________ .She always comes on time.A.is she;No,she isn't B.isn't she;No,she isn't C.is she;Yes,she is D.hasn't she;Yes,she is ____ _____ comes to school on time todayAll the students come to school on time today.同义句转换 he was often late for school but he always comes to school on time now.(同义转换）he ___ to_____late for school 甲,乙两个数,如果甲数加上320就等于乙数了,如果乙数加上460就等到于甲数的3倍,两个数各是多少? 3.甲、乙两个数,如果甲数加上320就等于乙数了.如果乙数加上460就等于甲数的3倍,两个数各是多少? 单词“millions”应读/'miljəns/还是/'miljənz/?最好再说一下什么词复数末尾读/s/什么读/z/? 什么词发ɔ:djəns? 音标/jɔ:z/./bəut/./ˊa:nsə/./trein/./ka:d/./ə＇gein/的单词怎么拼 甲数加320等于乙数,乙数加460等于甲数的3倍,问甲数是多少,乙数是多少? 英语单词holiday的音标是[ˈhɔlədi]为什么听一些人和电子词典读成[ˈhɔlədei] 填写英语单词s--l /ɔi/ [kɔk]的英语单词是什么?n-n 含有/ɔi/的英语单词有哪些?急, Mary goes to school early.She doesn't like be late判断对错 错在哪儿 does she goes to school early?哪儿错了 甲乙两个数,如果甲加上320就等于乙数,如果乙数加上460就等于甲数的3倍,两个数各是多少?请列出具体算式 She doesn't goes to school today.这句话哪处错了, she goes to school early的同义句 Yesterday she ___ (go) to school early. mary was sick yesterday ,but she is well enough to go to schooltoday.为什么用well enough而不用good enough Mark was ill yesterday,she he didn't go to school._____ _____Mark go to school yesterday.