【单选题】低压贮液器的作用是( )。
A.
收集蒸发器回气管路上设置的气液分离器中分离出来的低压液体
【单选题】Though it was late in the night, _________ he continued to work vigorously.
【单选题】He paused for a moment, then continued speaking.
【单选题】They feared that he would _____ if he continued to work on the project day and night. [ ]
【多选题】若齐次线性方程组的系数矩阵是3行4列,则该方程组的解可能有下列哪种情况?
【多选题】若齐次线性方程组的系数矩阵是4行4列,则该方程组的解可能有下列哪种情况?
【单选题】为了与时俱进,国家旅游局曾对其内部组织做 过数次调整,目前设为几个职能司(室)?