In order to distribute the side pressures over a wide area of the cylinder walls and liners, which of the listed types of pistons are used in modem low pressure air compressors?（） ["Differential","Trunk","Barrel","Valve-in-head"]
在“删除”对话框中，下面说法正确的是（）。 ["有3个选项","“复制”按钮属于对话框的选项","按“否”按钮，文件夹也就被删除","按“是”按钮后，文件夹将被送到“回收站”中"]
职业装穿着要谨慎选择款式和面料，给人以（）的印象。 ["轻巧","简便","严肃","端庄"]
（）is a charter form，in which the bare ship is chartered without crew and Charterer takes over the vessel with a minimum of restrictions. ["Time Charter","Trip Charter","Demise Charter","Voyage Charter"]
小城镇建设要大力推广“阳光信贷”，完善阳光监督机制，通过信贷监督箱、举报电话、（）等方式，对于不文明办贷，不依法办贷或不廉洁办贷的按规定给予处罚。 ["主动征求意见","96336热线","内部稽查","视频监控"]
侧线发车时，机车信号显示（）灯后，LKJ按股道出岔位置+列车换算长度计算出侧线控制曲线。
