有限空间作业单位应建立、健全有限空间作业()。
A.安全生产责任制
B.教育培训规定
C.员工守则
参考答案:A
One of the most important things in education is to let students ____ positive emotions and experience in the process of their learning.
A.require
B.acquire
C.demand
D.clarify
患者,73岁,上下无牙颌,全口义齿修复3年余,自觉义齿固位不佳,首先应采取的措施为()
A.全面检查
B.调
C.修整基托
D.组织面重衬
E.重新制作全口义齿