Most troubles likely to occur with marine diesel engine can, if located in time, be remedied with no difficulty and many can be （）if the engine is maintained with a high sense of responsibility to the people on the part of the motormen and engineers. ["found out","eliminated","avoided","lowered"]
变电危急、严重缺陷发生后24个小时内必须录入系统。
在通道调板中按Ctrl键单击新建通道按钮，会弹出“新专色通道”对话框，设置完毕后，单击“好”按钮，即可新建一个专色通道。
什么是大功率LED灯具的光利用率？
（）是指推动人们进行各种活动的愿望和欲望。 ["需要","需求","动机","要求"]
鱼干制品主要有哪些加工方法？
