Ed came home from his errands and put the groceries into the cupboard and the refrigerator. He grabbed a flathead screwdriver and a pair of pliers from his toolbox. In the kitchen, he got down on his hands and knees and turned on the flashlight. After a couple of minutes of looking, he decided what to do. He had never opened up a disposal before, but there is a first time for everything. The cylindrical disposal was about 7 inches in diameter and had a horizontal seam dividing the top half from the bottom half. The halves were held together by three screws. Ed jiggled the bottom half of the disposal; it was loose because two of the three screws were corroded. Only one screw was still doing its duty. Ed unscrewed it. The bottom half of the disposal was now lying on the cabinet floor. Ed thought for sure that it would be full of months-old food, but there was no food, only a hardened, torn, useless gasket. The next day Ed went to the hardware store to buy some screws and a new gasket. The employee told him that they did not carry those gaskets and suggested that he write to the manufacturer. Ed returned home. He created his own gasket by using gasket sealant that comes in a tube. He applied the sealant, screwed the two halves back together, and crossed his fingers. The next day he turned on the water and switched on the disposal. When he saw the water pouring out of the seam, Ed knew one thing: it was time to buy a new disposal. The good thing was that new disposals started at $79. The bad thing was that it would have to be installed by a plumber. Plumber rates started at about $80 an hour. Ed decided that since the disposal used a lot of energy and the world needed to use less energy, from now on he would put his scraps into the kitchen garbage bag. He reminded himself to tell everyone at work tomorrow about how he was now helping to solve the world’s energy probl
最新问答： 1fiying,we,people,kites,there,saw连词成句 2much,there,too,string 40分钟=（）小时 7240分钟=（）小时 720千克（）吨 f(x)=x^2-2x-3,g(x)=x^2-4x-5,求f(x)=f(g(x))的单调区间 如图,△ABC的边长为3分之4庚号3的等边三角形,p是AB边上的动点,设BP=x,△PBC的面积为y. 1-6/12用百分比的文字形式怎么说 在“人体的阿波罗计划”--人类基因计划基本实现后，我们知道人体细胞内的基因数为（ ） 求老师解答：Read and write.(看 高一生物 急组成人,噬菌体,烟草花叶病毒,根瘤菌中遗传物质的核苷酸分别有多少种{ ｝A8,4,4,8 B 4,4,4,4 带独字的成语 英语高手速来解题，在线等，急！！！ 如图，某正方形园地由边长为1m的四个小正方形组成，现要在园地上建一个花坛（阴影部分），使花坛面积是园地面积的一半，下图中 什么是偏置电阻又有什么作用 氢氧化铁胶粒吸附什么离子带正电,又靠什么中和使胶体不带电?是OH-还是Cl-, 这句话的英文 农业变化真大对什么产生的重要影响力 won't和don't 有什么区别啊求问. 数学天才来看看了1一个圆锥形沙堆,底面周长是12.56米,高是1.2米.用这堆沙在10米宽的公路上铺2厘米厚的路面,能铺 1.下列各式中,运算结果是9a^2-16b^2的是（ ） 甲乙两地相距360千米,一辆汽车行了全程的12分之一,再行多少千米,使剩下的路程的4倍? 若不等式2x
