机械密封动环与静环之间的密封是()。A.静密封 B.动密封 C.径向密封 D.旋转动 发布时间:2019-09-15 12:32 │ 来源:www.tikuol.com 题型:单项选择题 问题: 机械密封动环与静环之间的密封是()。A.静密封B.动密封C.径向密封D.旋转动密封
题型:单项选择题 根据下列各图和句意选择正确的词填空1. confused/confusingYou are _____ me.2. bored/boringI'm _____.3. embarrassed/embarrassingDon't be so _____. 4. excited/excitingThis film is so _____. 5. worried/worryingI'm too _____ to go to sleep. 查看答案