在主机遥控系统中，采用负荷控制时，若设定转速不变，则随外界负荷变化，主机转速及油门开

     My wife and I go to the theatre whenever we                     
have time. But before we buy ticket, we would
like to know whether the play is good and bad.
When a new play open, we usually read the
reviews on our local newspapers to get information 
about it. Last week the new comedy opened at the 
theatre. The newspaper story said it was very amused,
so we decided to go on the Saturday night. It took
my wife a long time to make her mind what to wear
and we left a little later, By the time we got there,
the first act already begun. We were sorry we had missed
part of the play, because the rest of it was very funny.