Adequate attention must be given to the water cooling system of the air compressors, for （） can cause condensation on the cylinder walls. ["overcooling","poor cooling","overloading","unloading"]
在编辑PowerPoint时经常需要更改选定文字的字号，有哪些方法可以更改字号。（） ["单击"增大字号"或"减小字号"","直接在字体工具栏内字号处选定字号","执行"格式"菜单中"字体"命令，弹出对话框，选择相应字体","同时按"Ctrl"+"+"键或"Ctrl"+"-"键"]
技术成长阶段的小企业应该（）。 ["A.垄断新技术","B.对外转让技术","C.向国外出口制成品","D.在国内应用技术并向国外转让"]
蓄冷器（或切换式换热器）发生进水事故如何处理？
An example of an anchor which has a stock is a（）. ["Bruce anchor","Dunn anchor","Hook anchor","LWT anchor"]
渔-稻复合系统为什么能缓解或避免鱼类浮头？
