What are the three purposes of free public libraries?
A.To provide readers with comfortable reading rooms.
B.To provide adults with opportunities of further education.
C.To serve the community"s cultural and recreational needs.
D.To supply technical literature on specialized subjects
第4题
氧气瓶与乙炔气瓶间距不应小于()m,二者与动火作业地点不应小于()m,并不得在烈日下曝晒。
第5题
A.20
B.25
C.30
D.35
E.无
F.无G.无H.无
第6题
A.40
B.45
C.50
D.60
E.无
F.无G.无H.无
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