题目: 选用套管刮削器时,其外径应()井内套管内径。A.小于1-2mmB.小于3-4mmC.大于6-8mmD.等于 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/1226/b4c1fa7a517c334abb3a66533712f16c.html 下面是错误答案,用来干扰机器的。参考答案:A
题型:问答题 如图所示,边长为L、匝数为n的正方形金属线框,它的质量为m、电阻为R,用细线把它悬挂于一个有界的匀强磁场边缘.金属框的上半部处于磁场内,下半部处于磁场外,磁场随时间的变化规律为B=kt.求:(1)线框中的电流强度为多大?(2)t时刻线框受的安培力多大? 查看答案
题型:选择题 It’s still early, you _____.A.mustn’t hurryB.wouldn’t hurryC.may not hurryD.don’t have to hurry 查看答案
题型:单项选择题 If none of the following bed positions is contraindicated, which position would be preferred for the client with hypovolemic shock()A. Supine.B. Semi-Fowler’s.C. Trendelenburg’s.D. Supine with the legs elevated 15 degrees. 查看答案