The effects of almost universal employment were overwhelming in that ______.
A.the work status of those not in paid employment suffered
B.the household and village community disappeared completely
C.men now traveled enormous distances to their places of work
D.young and old people became superfluous components of society
第3题
适用于弱酸、稀酸、碱类和普通溶剂滤过的是
A.醋酸纤维素膜
B.硝酸纤维素膜
C.聚酰胺膜
D.聚四氟乙烯膜
E.聚偏氟乙烯膜
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