金属非金属地下矿山风量按排尘风速计算，其中峒室型采场最低风速不小于（ ）m／s。 A．0．25 B．0．15 C．0．05 D．0．5

Joseph Addison s chief contribution to literature lies in his essays written for The Spectator and（）

A．The Talker
B．The Reviewp
C．The Tatler
D．Cato

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Generally speaking, English literature of the 18th century may be divided into three periods. The first period was characterized by the neo-classicism, （）of which was the representative poet. 点击查看答案