I'd和I'll发音!求音标!3Q

相关推荐

• 几道电功率,1.一标有2.5V 0.3A字样的灯泡L和最大电阻为20欧的滑动变阻器R串联,接到电压为U的电源上,下列错误的是A.若U=2.5V,无论怎么样移动滑片P,电路的总功率均不会超过0.75WB.若U＞2.5V,且不损坏灯泡和变阻器,无论怎么样移动滑片P,电路的总功率一定大于0.75WC.当滑片P移动至某个位置时,L和R的电功率可以相等D.若U＜2.5V,无论怎么样移动滑片P,L均不能正常发亮.2.一电动机线圈的电阻为1欧姆,线圈两端所加的电压为2V时,电流为0.8A,电动机正常工作.(1）在求电动机正常工作1分钟所消耗的电能时,有以下两种不同的解法小明解：W=UIt=2V×0.8A×60s=96J小华解：W=I²Rt=（0.8A）²×1Ω×60s=38.4J你认为哪位同学对,做出判断并说明理由（2）求电动机正常工作1分钟所转化的机械能同学，好歹我打了那么多，你的回答真简略
• 关于eight的发音weight [weit]height [hait]这两个的发音这么大分别而在音标表里,ei只列在[ei]音里而[ai]音里只有i和y,ei是不在其中的height怎么会读作[hait]呢
• 请教几个英语短语和句子的解释1、a stary cat2、to my distress3、as a scratching post4、I’ll have him trained in no time.5、Tom is short （ ） Thomas。A、in B、of C、for D、from6、a few seconds7、a hot potato8、They are big shorts(对不起，我把shots打成shorts了）。9、We are small potatoes。10、The teacher thought little of the matter because he considered it a small potato。
• 关于副词和形容词（ ）My work is___done.I'll be right with you.A.hour and hour B.now and then C.more or less D.more and more( )Zhou Feng has learned English for many years,but he can___understand the English speakers.A.hardly B.certainly C.always D.almost
• you`re 和I`ll里re和ll怎么发音?
• 英语音标中【i】如何发音?一般都说介于“一”和A之间,可是还是读不准.在单词中的发音,比如predict.
• 位于同一平面的两个直线l,m,向量方程为r=3i+j+k+s(2i+j+3k) 和 r=7i-7j+5k+t(i+2j+k) ,求该平面公式的公式,用ax+by+c=d的形式……
• 英语音标i和i：的区别如题两者只是发音长短的问题吗~
• 两圆外切连心线是不是等于两个圆的半径之和具体的题目是Rt△ABC,∠A=90°,AD⊥BC于D,两条直角边是3和4,点I1,I2分别是△BDA和△CDA的内心,求I1I2的长
• 英语改错题.求答案=A=Dear Sally,Now I'd like to tell you something about my part-time job this summer vacation,of which I worked like a guide in a travel agency.The work was interesting but tired.I think it was helpful to work this holiday.It was the first time that I have earned money on my own.I've come to understand how hard my parents work to support for the family.I used to keep on ask them for my money,but now I'll never waste money and learn to share wo
• I don’t like to play with him.
• 青海湖面积的面积多大?