[单选题] 停用( )的压力容器,重新启用时,使用单位应当进行自查,到使用登记管理机关办理启用手续;超过定期检验有效期的,应当在重新启用前1个月向特种设备检验检测机构提出定期检验申请。
A.3个月以上
B.6个月以上
C.一年以上
D.两年以上

[单项选择]The rate of population growth is fastest in underdeveloped countries. In these countries a high birthrate is accompanied by a lowered death rate thanks to improved standards of public health. Ideally it should be possible to counter balance the effect of a reduced death rate by all increased use of family planning. In practice, however, population control is a complex matter. Throughout history people have determined the size of their families according to the cultural values of their societies.
Population control has long been a subject of discussion among researchers. Some have argued that the supply of good land is limited. In order to feed a large population, bad land must be cultivated and the good land overworked. As a result, each person produces less in a given amount of time and this means a lower average income than could be obtained with a smaller population. Other researchers have argued that a large population gives more scope for the development of facilities such
A. a rise in work efficiency
B. a redaction in average income
C. a decline in grain production
D. a shortage of farm workers

[单选题]女性，18岁，心脏超声检查示：剑下两房心切面近上腔静脉房间隔连续性中断约1.0cm，考虑为房间隔缺损，亚型属于（ ）
A.继发性房间隔缺损-中央型
B.继发性房间隔缺损-上腔型
C.继发性房间隔缺损-下腔型
D.继发性房间隔缺损-冠状窦型
E.继发性房间隔缺损-混合型

[判断题]提升钢丝绳出现磨损、断丝继续使用的责任者，属于违反操作“红线”
A.正确
B.错误

[单项选择]
阅读下列短文，从每题所给的四个选项(A、B、C和D)中选出最佳选项。
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