When you work with a computer, it leaves some useful error messages or window (66) to help you with your work.

A．hints

B．prompts

C．introductions

D．guides

间歇式罐头杀菌设备按杀菌锅安装方式分（）和（）杀菌锅。前者者又可分为（）杀菌锅和（）杀菌锅；后者可以分为（）杀菌锅、浸式和淋式杀菌锅和（）杀菌锅等。