（）is not a type of tide. ["SEMIDIURNAL","DIURNAL","MIXED","OSCILLATING"]
（）is not a feature of the electronic controlled engines. ["Lower fuel consumption","Better balanced cylinder power","A shorter overhaul period","Less smoke emissio"]
WXH-11型微机保护有几种状态？各状态下的方式开关、巡检开关如何设置？
测量接地电阻在（）时候进行。 ["下雨天","土壤干燥","土壤上冻","下雪天"]
If a cam-controlled engine has a normal injection pressure at rated speed,the injection pressure will be（）at slow speed. ["a little lower","a little higher","too low","exactly the same"]
何谓自检？何谓巡检？
