问题 问答题 简答题

聚氨酯泡沫塑料生产的一步法是什么?

答案

参考答案:

一步法是按适当的配方把原料二异氰酸酯,端羟基化合物,发泡剂,催化剂及泡沫稳定剂等组分一次加入发泡机混合头进行发泡,再经辊压,熟化和切片即为成品

填空题
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WE NEED OFFICE CLEANERS!

Three people are required for professional cleaning in the CBD area. Working hours from 5:00 pm on Mondays, Wednesdays & Fridays. About five hours per shift (轮班). A good record is necessary. Experience preferred. Phone 6345-7843 now.

INTERESTED IN CHILDCARE?

Qualified person or preschool teacher needed for busy childcare centre, south of the river. Full-time work guaranteed. Immediate start necessary. The candidate must be able to work as a cooperative team member. Phone 6345-2345 for an interview and fax resume to 6345-2345.

WANT TO WORK AS A DENTAL NURSE?

This is an exciting opportunity for a qualified dental nurse with a confident and cheerful personality to work in the School Dental Health Schemas. You must be able to get along well with children because the work involves talking to groups about dental health practices. For further information, visit our website: schooldentalservices@gov.sg. And fax your resume to 6234-4567.

FLORIST WANTED!

Are you a creative and trained florist(花匠) with at least two years of experience? Then this may be just what you are seeking. The city’s leading Florist Artist Studio needs another part-time member on their wedding team. Please phone 6098-7888 now!

40. You may most probably find the above advertisements ________.

A. in a store window       B. in a school magazine

C. in a newspaper         D. on a company notice-board

41. The position of a(n)_______is a part-time job.

A. florist  B. artist  C. preschool teacher   D. dental nurse

42. Which of the following is the most important for the childcare job?

A. Cooking skills                    B. Childcare experience

C. The ability to start work in two weeks. D. The ability to work well with other members.

43. The office cleaners will be required to work about ______hours a week.

A. 5    B. 10    C. 15     D.20