【判断题】直流12V供电的摄像机,输入电源正负极接错时摄像机会立即烧掉。
【单选题】挫折容忍力是指个体遇到挫折时免于()的能力。
【单选题】– What do you think Sally will be ________ five years? – She will be a doctor.
【单选题】听力原文:What do you plan to do in the next five years? (A) We've got a tight schedule. (B) Sorry, I can't accept your plan. (C) I have no plan yet. (40)
【判断题】直流12V供电的摄像机,输入电源正负极接错时摄像机会立即烧掉