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15×(-17)×(-2009)×0 "You're welcome"是什么意思? 梧桐落叶是为了适应什么环境 2009-4-17 上面的短文中提到陈景润后来摘取了“数学皇冠上的明珠”,这指的是什么. Nothing can make you bored 2014-09-17到2015-1-4是多少天 It is more f to do homework with a friend from your class Mum,can I go swimming with my friend?After your homework (　）,dear．中为什么是填 is　finished　而不是will　be　finished? If your homework ___,you can go skating with Dick.A is doneB has been doneC will be doneD was done选哪个 这是什么种类的蝴蝶? 这只蝴蝶是什么品种?前两对翅膀是黑的后面两对底色是黑的上面有橘色和白色点点 yes,you're right. 神火强光手电什么型号是T6灯芯 怎样的环境会使镀铬金属件被腐蚀?我们镀了一批金属构件,电镀硬铬,镀层的硬度厚度核使用的添加剂绝对都没问题,可还是被腐蚀了,应该是使用过程中的问题.镀后事没问题的,使用后镀层脱落 you'd better后面加什么? I you 后面加名词 是什么用法例如：you boys……（一般现在式的句子,不否定）和your boys 区别在哪里反义疑问句应该怎么说,是要用will 如果是,为什么要用will而不用don't you? 强光手电筒CREE Q5灯头的维修淘宝上买了一个手电筒,CREE Q5的灯头,不小心把发光体上面的聚焦的小凸透镜弄掉了,此时灯还是亮着的.此时我想办法把透镜粘上.在用针清理了原来发光体上面残余 3个T6灯头的手电筒50米的距离聚光怎么样? T6灯头手电会发烫么 强光手电 月亮湖C8 T6灯头 三洋红色外皮电池,开强光测试,电流1.1A,请问电流为什么会这么小?好像是cree T6 电流2A时可以达到600流明,我这亮度是不是太差了刚换了山寨火U火的18650,测得电流0.9A. 赏85!This is all ————I  want to do. A.what B.that C.who D.which这里的答案是B.为什么不是A?好的追加50 选择题there was little water left in the bottlethere was little water left in the bottle,____ A.was there B.wasn't there C.wasn't itD.didn't there The traveler drank up___little water there was left in the bottle.a whatb no matter how选什么? There was a little water left in the bottle,wasn't there?这里为什么用wasn't there而不用was there?请说明原因, 手电T6灯泡什么意思? 猎友手电筒有Q5,T6,R2的灯,这些都代表的什么意思,手电筒的亮度吗?有什么不同呢?这些Q5,T6,R2所代表的含义及灯有什么不同 Would you be ______help me carry the box upstairs?A.so kind as to B.enough kind toC.so kind to D.kind enough as to 英语翻译A carries B carrying C carry D carried you are so ugly when you cry glee 中的一首歌you are so ugly when you cry,please…… 描写南极极光的句子 写几句呼吁保护南极环境的警示语