问题 问答题 简答题

涡桨发动机控制器的功用是什么?

答案

参考答案:

涡桨发动机燃油控制器接受驾驶员的功率要求信号,控制器考虑一些变量(压气机出口压力、燃气发生器转速、自由涡轮转速和压气机进口温度)通过调节燃油流量,提供要求的功率而且不超过发动机转速和涡轮进口温度限制。涡桨发动机燃油控制器中有最大转速限制器、排气温度限制器和扭矩限制器,以保证这些重要参数不超过安全限制。旋转涡桨发动机的螺旋桨多是恒速螺旋桨。

单项选择题
完形填空
It was a cold winter’s night when I stopped for gas on my way home from work. I was tired and had a slight   36 .
I worked in a   37  doctor’s office and this was one of those days when the unexpected happened, making the schedule run   38  than usual. It seemed I was going to be late   39  home and my husband, being the   40  person, would be ready to pronounce me late once again. Maybe   41  I hurried, I could still make it home.
I was heading inside to   42  for my gas when I noticed an older couple at the counter. I heard them asking for   43  to the local hospital. It was the same hospital that I had just   44  a few minutes ago.
The young man at the counter was trying to be   45  in explaining how to get there, with two other people making   46 . One of them was   47  trying to give them a whole different route back. It was then that I walked over to the couple and said, “Would you like to follow me to the   48 ?”
A look of   49  crossed the woman’s face.
“I’m going right by there,” I said, which wasn’t a(an)   50  since I had just made up my mind to do   51  that.
I got in my car and began the journey back. I was trying to watch to be sure they were right   52  me. It took only fifteen minutes to get there as rush hour traffic was beginning to   53 . I felt better than I had all day and my headache was nearly gone.
Later, as I arrived home, my husband   54 , “So you aren’t ever late any more.”
I said, “Sometimes it’s   55  to be late.”
小题1:
A.breakB.feverC.coldD.headache
小题2:
A.foreignB.commonC.busyD.noisy
小题3:
A.earlierB.laterC.easierD.simpler
小题4:
A.gettingB.cookingC.callingD.working
小题5:
A.toughB.punctualC.generousD.careful
小题6:
A.asB.sinceC.whileD.if
小题7:
A.payB.changeC.waitD.search
小题8:
A.opinionsB.troubleC.directionsD.money
小题9:
A.reachedB.visitedC.calledD.left
小题10:
A.skilledB.helpfulC.experiencedD.active
小题11:
A.commentsB.promisesC.jokesD.offers
小题12:
A.onlyB.stillC.evenD.ever
小题13:
A.stationB.officeC.hospitalD.hotel
小题14:
A.panicB.reliefC.sadnessD.peace
小题15:
A.dutyB.factC.reason D.lie
小题16:
A.partlyB.properlyC.exactlyD.perfectly
小题17:
A.acrossB.beforeC.beside D.behind
小题18:
A.go upB.die downC.speed upD.turn down
小题19:
A.teasedB.shoutedC.burstD.laughed
小题20:
A.possibleB.usual C.goodD.safe