【单选题】–Could you do something for me, please? -________.
【单选题】— _____ do you do the exercise, Dave? — About once a week. [ ]
【单选题】– Could you tell me ________? – I’m of medium build with long hair.
【单选题】–Could you tell me ______ yesterday? --I’m sorry, boss, My car was broken on my way here.
【多选题】导致离合器分离不彻底的原因有
D.
离合器从动盘翘曲、铆钉松脱或新换的从动盘过厚
【多选题】导致离合器分离不彻底的原因有( )
D.
液压传动离合器的液压系统漏油造成油量不足,或有空气侵入
【简答题】什么是植物病害的病状?列举4种常见的病状类型。