问题:单选题在劳动过程中,工业毒物引起的中毒叫()。A 工伤B 职业中毒C 劳动伤害D 致敏性...
Sunday, June 25, 2023
Thursday, September 22, 2022
Thursday, September 22, 2022
Sunday, March 24, 2024
问题:凸缘联轴器易于对中,可传递较大扭矩,广泛用于载荷()的联接中。...
Thursday, September 22, 2022
问题:单选题属于其它类型的水泵的是()A 气升泵B 螺杆泵C 凸轮泵D 轴流泵...
Sunday, December 10, 2023
问题:泵80IYⅡ-80与80IYⅡ-802相比,后者扬程高于前者。...
Thursday, September 22, 2022
问题:判断题对于同一介质,组成不变,露点一定高于冰点。A 对B 错...
Wednesday, May 8, 2024
Thursday, September 22, 2022
Thursday, September 22, 2022
Saturday, September 17, 2022
Thursday, September 15, 2022
问题:单选题齿轮泵内有(),所以存在串漏问题。A 闭死容积B 卸荷槽C 卸荷孔D 高、低压腔...
Friday, March 3, 2023
问题:当空气与最少量的可燃气体或蒸汽形成混合物,遇火源能爆炸,这种能发生爆炸的最低浓度叫爆炸()。...
Sunday, September 18, 2022
Monday, September 19, 2022
问题:判断题蝶阀不能调节流量,不能用于高温高压场合。A 对B 错...
Thursday, May 9, 2024
Thursday, September 22, 2022
Thursday, September 15, 2022
问题:单选题螺杆泵是一种()泵。A 离心B 齿轮C 柱塞D 容积...
Friday, April 7, 2023
问题:判断题对于排放量较小的液体介质选用微启式弹簧式安全阀。A 对B 错...
Friday, April 7, 2023