热能
In the 17th century,the English government encouraged people from Scotland and Northern England to emigrate to the north of Ireland because() ["they wanted to increase its control over Ireland","they had too many people and didn’t have enough space for them to live in Britain","they intended to expand their investment","they believed that Ireland was the best place for them"]
ThePCRcyclePCR循环
压力容器年度检查方法() ["宏观检查为主","必要时测厚、壁温和腐蚀介质含量测定、真空度测试","水压试验"]
摄取人物膝盖以上部分,能为演员提供较大的活动空间,不仅能使观众看清人物表情,而且有利于显示人物的形体动作的景别是() ["中景","近景","远景","特写"]
反映警务及其活动过程的全部信息称作()。