()是为了使生产过程在符合物质条件和工作秩序下进行,防止发生人身伤亡和财产损失等生产事故,消除或控制危险有害因素,保障人身安全与健康 ,设备和设施免受损害,环境免遭破坏的总称
C
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Youngerchildrenarecurious________howthingswork,andmanyofthemwanttotakeaparteverythingwithintheirreach.
Youshouldhelpthem________whenyourfriendsquarrelwitheachother.
Ifyoutrytolearntoomanythingsatatime,youmayget________.