提高个人业务产品助销员营销能力的方式不包括（） ["“以师带徒”","行内集中培训","依靠社会关系资源","参加外部专业培训"]
Before starting any diesel or gasoline engine，which of the following must be checked? （） ["Oil level","Flow of cooling water","Exhaust discharge","All of the above"]
简述幅度调制，列出两种幅度调制的名称。
All marine low-speed diesels are of what design?（） ["Four-stroke","Two-stroke","Electronic ignition","Forced exhaust"]
对于共享设备，在同一时刻可以让多个进程使用它进行输入/输出操作。
请将图中字母代表的地区与相应的气温降水图进行匹配。
