To learn the sanitary condition of different types of hotel room and the existing problem.
掌握辖区内不同类型旅馆客房卫生状况及存在问题。
It's a key problem to choose and fix the control valve well and make it run in high level condition.
选择和安装好调节阀，使调节阀在一个高水平状态下运行将是一个很关键的问题。
New course; Experiment teaching; teaching present condition; Problem and counterplan.
新课程；实验教学；教学现状；问题与对策。
Their was no modern air-condition, and air pollution from factories was a problem.
他们没有现代的空调设施，但是来自于工厂的空气污染却是一个问题。
Now we face the problem that how to improve its growth condition and productivity.
改善水稻作业环境、提高水稻生产力是目前面临的研究课题。
Now we face the problem that how to improve its growth condition and productivity.
改善水稻作业环境、提高水稻生产力是目前面临的研究课题。
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