荷兰是怎样围海造田的？
变压器的工作过程是一个（）过程。 ["能量传递","电压与电流的传递","效率传递","稳定频率"]
用键盘对文档中的图片进行剪切操作，应先按住（）键。 ["Ctrl","Alt","Shift","Del"]
根据总行2016年《关于加大产能严重过剩行业信贷结构调整力度的通知》，以下（）行业客户属于压缩、退出类。 ["钢铁","煤贸","建材批发","造船"]
The purpose of the deck seal in an inert gas system is to prevent（）. ["flammable vapors from entering machinery space","flue gas escaping to atmosphere","inert gas escaping to atmosphere","air entering inert gas system"]
瑞士的旅游业何以发达？
