制氢装置的设备材质，主要有碳钢、不锈钢、低合金钢和炉管专用钢。
参考答案：对
--- The party is so great!
--- Yes, but Johnson, we’ve got to go home. ______
--- Thank you. See you later.
A．Enjoy yourself!
B．See you.
C．I’m very sorry.
D．What about you?
第一次配置无线接入点，一般采用( )配置方式，无需将无线接入点连接到一个有线网络中。
