And when you call general enquiry lines such as 100, 1605 and 1711, you will be greeted by automated answering machines which give you step-by-step instructions on the numbers to enter on your telephone set, to obtain the information you need.

• 又如，打100、1605、1711等电话号码，电话另一端会自动告诉你服务项目的内容，并指示你按1、2、3等等。