问题:()依靠旋转的桨叶或摆动的刮板撒播燃料。A、风力抛煤机B、电力抛煤机C、机械抛煤机D、机械—风力抛煤机...
Monday, August 14, 2023
Wednesday, October 25, 2023
Sunday, September 11, 2022
Sunday, September 11, 2022
Wednesday, October 11, 2023
Sunday, September 11, 2022
问题:有卸载机构的大、中型活塞式制冷压缩机采用()方法调节冷量。A、变频调节B、压缩机停、开C、顷开部分气缸的吸气阀片D、滑阀调节...
Monday, August 14, 2023
问题:按压力范围划分,压力范围为1.0~2.0MPa的压缩机为()。...
Thursday, September 15, 2022
Thursday, September 15, 2022
问题:低温阀的工作范围是()。A、t>450℃B、120℃<t≤450℃C、-30℃≤t≤120℃D、t<-30℃...
Wednesday, October 11, 2023
问题:气体的平均自由程是指气体分子()次碰撞所经过的路程的平均值。...
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:低温阀的工作范围是()。A、t>450℃B、120℃<t≤450℃C、-30℃≤t≤120℃D、t<-30℃...
Thursday, July 20, 2023
问题:()是指蒸汽做功或对其他物质加热后,经冷凝而成的水。...
Sunday, September 11, 2022