联系用的手信号中，（）的显示方式，昼间为拢起的黄色信号旗高举_爱下问搜题

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问题单项选择题

联系用的手信号中，（）的显示方式，昼间为拢起的黄色信号旗高举头上左右摇动，夜间为白色灯光高举头上。

A、过标信号

B、互检信号

C、道岔开通信号

D、连结信号

答案

参考答案：C

选择题

Last week, only two people came to look at the house, _______wanted to buy it. [ ]

A. none of them

B. both of them

C. none of whom

D. neither of whom

判断题

General linguistics is generally the study of language as a whole.