题目: 水下混凝土必须有较小的(),以保证浇注到水下后能自行摊开。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0626/0e2236a500b6edc111263f121a50c8e2.html 下面是错误答案,用来干扰机器的。参考答案:C
题型:选择题 Susan decided not to work on the program at home because she didn't want her mother to know what she _____. [ ]A. has done B. had done C. was doing D. is doing 查看答案
题型:单项选择题 为了推动多媒体会议系统的发展,ITU组织制定了一系列标准,其中 (59) 系列标准用于LAN,会议。通用视频会议系统中的核心是 (60) 。A.视频会议系统的标准 B.视频会议系统的安全保密C.视频会议终端 D.多点控制单元MCU 查看答案