计划生育的具体内容包括________、________、________及________。
参考答案：晚婚｜晚育｜节育｜提高人口素质
The match was to the following Saturday because of bad weather. [ ]
A.prohibited
B.postponed
C.predicted
D.preserved
老塔大量吹汽影响焦化分馏塔预热段温度。
