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【单选题】
捷达轿车挂不上倒档,经调整后,能够挂上倒档,但挂不上5档,可能的原因是( )。A.
同步器磨损
B.
拨叉轴弯曲变形
C.
变速器润滑不良
D.
操纵机构磨损松旷
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【单选题】---Could you tell me _________ tomorrow morning? ---Well, it will start at half past eight.
A.
when the meeting will start
B.
when the meeting started
C.
when will the meeting start
【单选题】He (start) swimming at the age of eight.
A.
start
B.
started
C.
is starting
D.
have start
【简答题】力偶对其作用平面内任一点之矩都等于力偶矩,而与________无关。
【简答题】力偶对任一轴上的投影代数和（），力偶对其作用平面内任一点之矩恒等于（）。
【简答题】力偶对其作用平面内任一点之矩都等于力偶矩,而与 无关;力偶在任一轴上的投影等于 。力偶只能与 平衡。
【简答题】按要求完成句子。 1. We start school at eight o'clock. (改为否定句) We _____ _____ school at eight o'clock. 2. They have lunch at school. (改为一般疑问句, 并作肯定回答) _____ they _____ lunch at school? _____, they _____. 3....
【简答题】力偶对其作用平面内任一点之矩都等于力偶矩,而与矩心位置 关。
【单选题】Let's start the trip ______ half past eight ______ the morning of February 21. [ ]
A.
at; on
B.
at; in
C.
/; in
D.
about; by
【单选题】Let’s watch the news on CNN. It at eight o’clock.
A.
will start
B.
is starting
C.
is going to start
D.
starts
【简答题】听下面的对话，回答1-2题。 1. When does Peter's school day start? [ ] A. At eight B. At eight fif C. At eight twenty-five 2. Who finds English very interesting? [ ] A. Millie. B. Peter. C. Lucy.
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