预防和控制血吸虫病的基础是，开展预防性治疗，灭螺，改善环境卫生，并进行卫生教育。
Prevention and control of schistosomiasis is based on preventive treatment, snail control, improved sanitation and health education.
而且，没有有效的资产控制，这些紧急设备有可能真的就不能用了，因为往往不能及时地对这些设备进行必需的预防性维护以及符合规定的校准。
Also, without efficient asset controls, critical equipment could become unusable if needed preventative maintenance and regulation-directed calibrations are not performed in a timely manner.
识别危险病列出控制这些危险的预防性措施。
Identify the hazards and list preventative measures to control them.
应用推荐