J2-7型空气制动机,当工作风缸压力降压与制动管压力相同后,工作风缸与制动管压力仍继续同时下降为工作风缸().
参考答案:外漏
小题1:Having a large family to s__________, he has to work hard to earn more money.
小题2:He is such a great man that all of us show our r__________ to him.
小题3:The factory has been e__________ with modern machines.
小题4:I’m so full that I couldn’t eat another m__________.
小题5:Tsunami caused many deaths and left even more people h__________.
小题6:The company in Nanjing e__________ about 20,000 boxes of wine to the UK last year.
小题7:I m__________ in English when learning in university.
小题8:When a__________ the house, they found something unusual, so they stopped to have a look.
桥式螺旋卸车机的布置和特点如何?