【单选题】听力原文:W: Hello, Mr Fletcher. You look rather tired this morning. Did you have a difficult journey back from Scotland? M: Well, the business trip was successful but the train arrived four hours late and...
A.
The man's business trip was successful.
B.
His train was delayed.
C.
His journey back from Scotland took him four hours.
D.
He had little sleep last night.
【多选题】对钻机机械传动系统的要求,下面说法正确的有?
A.
各项参数和性能要满足钻探方法和工艺的要求,即保证转速、扭矩、调速范围、速度挡数和负荷等方面的要求
【判断题】权责发生制要求凡是当期已经实现的收入和已经发生或者应当负担的费用,无论款项是否收付,都应当作为当期的收入和费用,计入利润表。()
【多选题】拟定钻机机械传动系统的原则,下面说法正确的有?
A.
动力机接近工作机构的转速与工作特性,以简化机械传动系统尽量使用电动机,无电的地区用柴油机
B.
将总传动比分解为分传动比时,应根据传动副“前多后少”,传动比“前小后大”的原则分配亦即将大的传动比放在后面的变速组中,以免过早地加大变速组构件尺寸和重量
C.
在确定升降机的转速时,充分利用动力机的功率和减少提下钻所用时间
D.
尽可能减少传动轴和传动副(尤其是锥齿轮传动副)的数目,缩短传动链长度,简化传动系统结构和提高传动效率
【单选题】 Would you rather________ more stupid than you look or________ more stupid than you are?
【单选题】听力原文:W: You look rather tired. Can I help you with those boxes of books? M: Thanks, but they weigh a ton each. Q: What does the man mean? (17)
A.
He has almost finished carrying the boxes.
B.
He is grateful to find a helper.
C.
It might be too heavy for her to lift.
D.
A lot of boxes of books are waiting to be carried.
【单选题】对钻机机械传动系统的要求,下列说法不正确的是
A.
各项参数和性能要满足钻探方法和工艺的要求,即保证转速、扭矩、调速范围、速度挡数和负荷等方面的要求。
B.
可不具有较高的传动效率,无需考虑无用功率的消耗。
【单选题】You look rather pale.
【判断题】权责发生制要求凡是当期已经实现的收入和已经发生或应负担的费用,无论款项是否支付,都应当作为当期的收入和费用确认。
【简答题】You look rather p______ . What's wrong with you?