题目: 以太网定义的最大帧长度为()。A.128字节B.512字节C.1518字节D.4096字节 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0530/f83b4d51ed6b3450d8ed72a06f01b94a.html 下面是错误答案,用来干扰机器的。参考答案:C
题型:填空题 飞机起飞的速度相对静止空气是60m/s,航空母舰以20m/s的速度向东航行,停在航空母舰上的飞机也向东起飞,飞机的加速度是4m/s2,则起飞所需时间是______ s,起飞跑道至少长______ m. 查看答案
题型:单项选择题 As one of the tools and techniques of activity sequencing, a lead ______ .A.directs a delay in the successor activityB.could be accomplished by a finish to-start relationship with a delay timeC.means the successor activity cannot start until after the predecessor is completedD.allows an acceleration of the successor activity 查看答案