题目: 一棵二叉树第六层(根结点为第一层)的结点数最多为 【4】 个。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0411/0b33e606871d1591e19a9ea9494ab43d.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 Students are ______ to speak loudly in the reading room. [ ]A. told B. supposed C. not supposed D. allowed 查看答案
题型:单项选择题 ()不是DSC遇险呼叫频率和无线电话遇险通信频率A.6312.0/6215.0KHzB.2187.2/2182.0KHzC.8414.5/8376.5KHzD.12577/1290.0KHz 查看答案