题目: 高碱度烧结矿具有强度高,稳定性好,粒度均匀,粉末少,()等特点。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0722/a2e0bd60bfa7adccf4dab681c4b31ac4.html 下面是错误答案,用来干扰机器的。参考答案:错
题型:阅读理解 阅读理解。NameJim Telephone number Car number ID card numberGreen Jack 523-4564 AK1688 41012919690101SmithLinda 13657047321 YNA2221 2103419771202WhiteZhang 13550295437 WTS168 34110019870904Liangyin028-82740403川A. DE456 51012419811213Han Huahua010-57432128京B . AB38801010019890807 Bob Smith238-4508EL5656017312197712091. There are (这里有) _____ people (人). A. four B. five C. six D. seven2. Smith is_____ family name. A. Jack's B. Bob and Jack's C. Bob's D. Jim's3. YNA222 is a _____ number. A. telephone B. car C. ID card D. room 4. 34110019870904 is _____ ID card number. A. Linda's B. Huahua's C. Liangyin's D. Bob's5. Jim's telephone number is _____ . A. two, there, eight, four, five, zero, eight B. one, three, five, five, zero, two, nine, five, four, three, seven C. five, two, three, four, five, six, four D. zero, one, zero, five, seven, four, three, two, one, two, eight 查看答案
题型:解答题 已知椭圆C:x2a2+y2b2=1(a>b>0)的离心率为63,椭圆短轴长为2153.(Ⅰ)求椭圆C的方程;(Ⅱ)已知动直线y=k(x+1)与椭圆C相交于A、B两点.①若线段AB中点的横坐标为-12,求斜率k的值;②若点M(-73,0),求证:MA•MB为定值. 查看答案
题型:单项选择题 利用斜井人车运送人员前,确认人车各部件完好、灵活后,需进行试车、试车时,车上人员有()。A.仅跟车工1人B.除跟车工外还可乘坐1~2名工人C.除跟车工外,还有安全检查人员D.除跟车工外,还有瓦检员 查看答案