市场经济条件下应建立怎样的人口与计划生育工作新机制()
A.依法管理;
B.村民自治;
C.优质服务;
D.政策推动;
E.综合治理。
参考答案:A, B, C, D, E
The League Secretary and monitor ______giving a speech while the rest of the class ________ listening attentively.
A.were, were
B.was, was
C.were, was
D.was, were
蒸汽过热器的作用是什麽?