standard liquid heating system

例句：

1. 1. The company's policyis to maintain a standard level of service.
   该公司的政策是保持服务标准水平。
2. 2. Thestandards for the exam were set by thegovernment.
   考试的标准是由政府设定的。
3. 3. Thenew product has met the industry'sstandard for quality.
   新产品已经达到了行业的质量标准。
4. 1.The liquid in the bottle is clear.
   瓶子里的液体是清澈的。
5. 2. Theliquid was so cold thatit froze my fingers.
   液体太冷了，冻得我的手都僵了。
6. 3. The liquid was mixed withwater before being poured into the pot.
   液体在倒入锅中之前被和水混合了。