The origin of the American party system can be traced to______.
A.the struggle between the Royalists and revolutionaries in the War of Independence
B.the constitutional debate between the Federalists and the anti-Federalists
C.the struggle between those who upheld slavery and those who opposed slavery
D.none of the above
第7题
我国煤矿安全生产的方针是()。
A.安全第一,质量为本
B.安全为了生产,生产必须安全
C.质量是基础,安全是前提
D.安全第一,预防为主,综合治理
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