【单选题】The new laws gained widespre __________________.
【单选题】Medical researches ______ much of the rise in the incidence of lung cancer to the widespread use of cigarettes.
【多选题】资产评估的公正性表明资产评估具有( )。
【单选题】某迟滞比较器,当输入电压信号增大到4V输出信号负跳变,当输入信号减小到-2V时发生正跳变,则该迟滞比较器的回差电压是( )。