【单选题】Now that we have settled the question of feasibility (可行性), let's proceed to the next one ─_____ raise the fund from the bank. [ ]
【简答题】角点施工高度为 “ + ”为表示 ,施工高度为 “ - ”为表示 。
【单选题】—Whose songs have you been playing? —______ years we played other people's songs, but now we play______ our own songs. [ ]
【单选题】反抗性负载采用能耗制动停车后,( )。 A .立即断掉直流电源 B .断直流电又重新加上交流电 C .停车后可以不做其他电气操作 D 不知道
【简答题】角点施工高度为“+”为( ),施工高度“-”为( )
【单选题】We have worked for three hours. Now let's stop _________ a rest.
【单选题】We have read f or an hour. Now let's stop ____a rest. [ ]