【单选题】According to a survey, which was based on the responses of over 188, 000 students, today’s traditional- age college freshmen are "more materialistic and less altruistic (利他主义的) "than at any time in th...

【单选题】小型对讲机性能优良，体积小，（）十分广泛。

【单选题】列车长通过手持对讲机指挥列车前、中、后部位置的专人组织引导旅客撤离，开启（ ），手持强光手电筒引导旅客下车，并做好车门口下车时的安全监护。【出自客客函〔2020〕7号《乌鲁木齐局集团有限公司客运系统非正常情况应急预案（试行）》】

【单选题】对讲机；小灵通

【单选题】Passage Two According to a survey, which was based on the responses of over 188,000 students, today’s traditional-age college freshmen are "more materialistic and less altruistic (利他主义的)...

【单选题】According to a survey, which was based on the responses of over 188,000 students, today’s traditional-age college freshmen are "more materialistic and less altruistic (利他主义的)" than at any time in the ...

【单选题】送单员使用的对讲机为（）频道。

【单选题】According to a survey, which was based on the responses of over 188,000 students, today"s traditional-age college freshmen are "more materialistic and less altruistic (利他主义的 )" than at any time in the...

【单选题】使用强光手电进入黑暗的室内，为了最大程度的观察周边环境，手电最好照到（）。

【单选题】通过长按（），启动对讲机。