低压轴封蒸汽是由轴封汽源通过喷水冷却后减温降压而成的。
查看答案
轴封冷却器将漏汽回收后,送入()。
A. 凝汽器
B. 低压加热器
C. 除氧器
D. 高压加热器
Hi, I'm Helen. I work for the BBC in London as________________.
I've learned a lot of skills in my job and I've made some good friends at work. Sometimes my job _________________and I don't get enough time to _________________.
Or even to tidy my____________, what do you do?