离心泵的出口压力与扬程成反比。
参考答案:错
With the machine ____, she couldn't keep her eyes ___ in bed.
A.burning, closed
B.burnt, close
C.to burn, closed
D.being burnt, close
延安时期为解决物质困乏在解放区开展了()。
A.反帝爱国运动
B.延安整风运动
C.大生产运动