如果排气口被破坏，则会导致罐内真空度降低，严重时会影响罐内的保温保冷效果，储罐上部结霜损耗液氮，造成液氮浪费，甚至会有潜在危险发生。

Hubei Chusheng Vehicle Co., Ltd. is a national key special purpose vehicle manufacturing enterprise with independent research and development capabilities under the CRRC City Transportation Co., Ltd., formerly known as Xiagong Chusheng Special Purpose Vehicle Manufacturing Co., Ltd., the company was founded in September 2002 and reorganized with Excellence Automobile Co., Ltd., a subsidiary of CRRC City Transportation Co., Ltd. in December 2018, and changed its name to Hubei Chusheng Vehicle Co., Ltd. The company is located in Suizhou National High-tech Industrial Park, which is the hometown of Yandi Shennong, and the hometown of chimes ancient music, and the metropolis of China's special purpose vehicles. It is a high and new technology enterprises in Hubei province.公司占地总面积70万平米，建筑面积22万平米。

试验水温均不低于5℃。

（4）充水和放水过程中，应打开透光孔，且不得使基础浸水。

（ × ）54、【判断题】移动式压力容器操作人员在操作中，如遇易燃、有毒介质泄漏时应立即采取有效措施，进行堵漏，并切断有关阀门，防止事故扩大。

贮槽处于作业状况时，存在走漏、超压、爆炸等潜在危险，若不及时处理这些隐患，将会造成严重的后果。

（）（ √ ）60、【判断题】安全阀的排放能力应大于或等于压力容器的安全泄放量。

本工程选用HYZ-4-25。

（2）起重机械1）额定起重量≥0.5t的升降机。

（）（ × ）66、【判断题】空气是一种混合物，属氧化性气体，无色、无味、无毒。