【单选题】Many questions have been answered by John. He must have previewed the lessons last night, ____ he?
【判断题】目前数码相机使用的成像芯片主要有CCD芯片和CMOS芯片等
【简答题】John must have been busy yesterday,otherwise he ____________________(come) to the party.
【单选题】目前数码相机使用的成像芯片主要有CCD芯片和CMOS芯片等
【简答题】在比例里,如果两个内项的积是1,那么组成比例外项的两个数一定互为倒数.______.(判断对错)
【简答题】John must have been dissatisfied his achievement in computer science for he working further in the field.
【单选题】下 列 表 达 式 错 误 的是
C.
硫离子的核外电子排布式: 1s 2 2s 2 2p 6 3s 2 3p 4
【判断题】在比例里,如果两个内项的乘积是1,那么,组成比例外项的两个数一定互为倒数。
【单选题】— Where is John? — He _____ in the library.
【单选题】下列表达式错误,即表达式的值为False的是()