压力容器进行气压试验时，如何确定是否合格？
参考答案：
应缓慢将压力升至规定试验压力的10%，保压1-10分钟，并对焊缝和连接部位进行检查，如无泄漏可继续升至试验压力的50%，如无异常，其后按每级10%的试验压力，逐级升至试验压力，保压10-30分钟，然后降至设计压力，保压30分钟，进行检查，其间压力保持不变，经肥皂液检验无漏气，无可见的变形为合格。
Born in America，I spoke English，not Chinese，the language of my ancestors.When I was three，my parents flashed cards with Chinese ____ at my face，but I pushed them ____.My mom believed I would learn ___ I was ready.But the ____ never came.  On a Chinese New Year's Eve，my uncle spoke to me in Chinese，but all I could do was ____ at him，confused，scratching my head.“ Still can't speak Chinese？”He____ me，“You can't even buy a fish in Chinatown.” “Hey，this is America，not China.I'll get some ____ with or without Chinese.”I replied and turned to my mom for ____. “Remember to ask for fresh fish，Xin Xian Yu，”she said，handing over a $20 bill.I ____ the words，running downstairs into the streets of Chinatown. I found the fish ____ surrounded in a sea of customers.“I'd like to buy some fresh fish，”I shouted to the fishman.But he ____ my English words and turned to serve the next customer.The laugh of the people behind increased ____ their impatience.With every ____，the breath of the dragons(龙)on my back grew stronger—my blood boiling—____ me to cry out，“Xian Sheng Yu，please.”“Very Xian Sheng，”I repeated.The crowd erupted into laughter.My face turned ____ and I ran back home ____，except for the $20 bill I held tightly in my pocket. Should I laugh or cry？They're Chinese.I'm Chinese. I should feel right at ____.Instead，I was the joke，a disgrace(丢脸)to the language. Sometimes，I laugh at my fish ____，but，in the end.the joke is on ____.Every laugh is a culture ____；every laugh is my heritage(传统)fading away.
|