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【判断题】
在绘制外板展开图时,由于船体是左右对称的,所以我们只绘制一半船体的部分即可。A.
正确
B.
错误
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【单选题】{ 双曲柄机构机架长度为50 mm,两连架杆长度分别为100 mm和150 mm,则连杆长度L的最小值是_______________。 }
A.
50 mm
B.
100 mm
C.
150 mm
D.
200 mm
【简答题】窗的主要作用是采光。 判断对错
【简答题】A．The man, his wife and his daughter. B．The man and his wife. C．The man's wife and his two children. D．The man, his wife and his two children.
【单选题】— His sudden death surprised his wife. — It was so bad. His wife was surprised ____ his death. [ ]
A.
by
B.
with
C.
at
D.
on
【单选题】When Henry arrived home after a hard day at work, his wife was slept.
A.
his wife was sleeping
B.
his wife slept
C.
his wife has slept
D.
his wife has been sleeping
【单选题】Mr. Pontellier felt extremely frustrated because ______.
A.
his wife overslept
B.
his wife greeted late
C.
his wife was indifferent to his talk
D.
his wife showed too much interest in his talk
【单选题】确定双曲柄机构机架长度为50mm,两连架杆长度分别为150mm和100mm,这连杆长度L的取值范围是__。
A.
50mm≤L≤150mm
B.
100mm≤L≤150mm
C.
150mm≤L≤200mm
D.
100mm≤L≤200mm
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