Saturday, September 17, 2022
Saturday, September 17, 2022
问题:ZY—33/30氧压机曲轴有三个曲拐,曲拐夹角为()....
Saturday, September 17, 2022
Monday, September 11, 2023
Saturday, September 10, 2022
问题:板式换热器是()类型换热器。A、间壁式B、蓄热式C、混合式...
Friday, February 2, 2024
Sunday, September 11, 2022
Sunday, September 11, 2022
Saturday, September 17, 2022
Sunday, September 11, 2022
Saturday, September 17, 2022
问题:压缩气体容器绝对不允许让()接触压缩气体容器的任何部分。...
Saturday, September 17, 2022
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:对单一物质来说,在某一压力下,气体的汽化温度即为液体的沸腾温度,...
Saturday, September 17, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
问题:小型空分设备缩短启动时间的操作要领的主要原理是什么?...
Sunday, September 11, 2022
Saturday, September 17, 2022
问题:攻直径为M8以下的丝时铰杠的规格是()。A、6"B、9"C、11"D、15"...
Wednesday, May 24, 2023