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Such electron tubes ________ in a radio set are also found in a TV set.A.that we use B.as we use C.as we use them D.that we use them为什么选B不选A.as 跟that的用法有什么不同?32.I hate to see papers _______ in pencil.A.writing B.to write 请各位帮忙解一下这道英文物理题A 9 g bullet is fired into a 257 g block thatis initially at rest at the edge of a frictionlesstable of height 1.8 m. The bullet remains inthe block, and after impact the block lands2.3 m from the bo Mickey mantle hit the longest home run ever.It went 200 meters.Assuming he hit it at 45 degrees,find the velocity at which he hit the ball.(Hint:Vx=Vy,and solve 2 equactions) It is less to throw light on the topic in hand than for the sake of effect it is less of a problrm to be poor than to be dishonest这个谚语是什么意思 设随机变量X~N（10,9）,求P{X8},P{X 计算器怎样算方差说明书丢了- -JOINUS fx-82TL教学用电子科学计算器请问,怎样算方差?【看了好多方法,其中有个按键一直找不到——S-VAR,这个键.】请不要复制别人的, 由于地球在自转,因而在发射卫星时,利用地球的自转,可以尽量减少发射人造卫星时火箭所提供的能量.为了尽量节约发射卫星时需要的能量,现假设某火箭的发射场地就在赤道上,已知地球的半 name the set(s)of numbers to which each number belongs The difference between 2 numbers, each of which is between 3 and 4. Who are the two brothers that live on opposite sides of the road but never see each other? 五年级暑假生活指导 五年级暑假生活指导是什么? ____is less than ___A One-third ;two-thirds B One-third;two-third C First-three;first-threes D One-third;one-three is less than useless这么说对吗? A is 100-fold less than B.A.A比B少一百倍B.A比B的100倍少C.A比B的100份之一少……急要, sb is less than fortunate 地球公转和自转有什么特点 初一上册语文书第5单元后面的三个作文 云加两笔是什么字 云加二笔是什么字 初一上册语文三单元作文：我有一个“朋友”,要写自己在自然界中的朋友,最好是写树,花,草,字数在400字左右,回答得好的话我会另外增加许多分的 人教版五年级上册语文第七单元作文范文长点的,复制的也行. 已知(x+y)²=9,(x-y)²=49,求x²+y²和xy的值急用! 已知（x+y）²=1,（x-y）²=49,求x²+y²与xy的值 已知(x+y)²=49,(x-y)²=1,求下列各式的值:(1)x²+y²;(2)xy 等腰三角形三个内角与顶角相邻的一个外角之和为320度,则底角的度数是 正比例和反比例有什么区别?说白了就是正比例和反比例是什么?说清楚一点! 已知A={a-2,2a²+5a,12} 且-3∈A 求A的值 三角形ABC内接于圆o,角ABC=60度,求角AOC=多少度?要求 要使等式（a-b)的平方+M=（a+b)的平方成立,则整式M= 已知等式(a方+b方)的平方-(a方+b方)-6=0求a方+b方的值