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搜题/搜资源
【单选题】【消耗次数:1】
It [填空] raining when they left home.
①
is
②
are
③
was
④
were
参考答案:
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相关题目
【单选题】
A: Were you at home last night? B: [填空].
①
Certainly
②
Certainly I was
③
Sure I was
④
O.K
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【单选题】
Please get me a new [填空] when you go back home.
①
clothes
②
dress
③
clothing
④
trousers
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【单选题】
It is ten years ___ I left home.
①
when
②
after
③
since
④
as
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【多选题】
We were very tired and wanted to get home ____________________ .
①
as soon as possible
②
as quickly as possible
③
as fast as possible
④
as much as possible
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【单选题】
Who _______ your pets when you are not at home?
①
takes care
②
looks care
③
takes care of
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【单选题】
The garden ____ while the Greens were away from home.
①
took good care of
②
was taken good care
③
was taken good care of
④
was taking good care
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【单选题】
The garden _______while the Greens were away from home.
①
took good care of
②
was taken good care
③
was taken good care of
④
was taking good care
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【单选题】
He left home without ______ any message to his parents.
①
leaving
②
leave
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【单选题】
There were some chairs left over[] everyone had sat down.
①
when
②
until
③
that
④
where
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【单选题】
When I was a child, I_______go back home on time.
①
have to
②
must
③
had to
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随机题目
【单选题】
具有急回特性()的曲柄摇杆机构行程速比系数。
①
K=1
②
K1
③
K1
④
以上都不对
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【单选题】
平面运动副所提供的约束为()
①
1
②
1或2
③
节线2
④
3
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【判断题】
机器的传动部分是完成机器预定的动作,通常处于整个传动的终端。
①
正确
②
错误
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【单选题】
下列哪一点是构件概念的正确表述()
①
构件是机器零件组合而成的
②
构件是机器的装配单元
③
构件是机器的制造单元
④
构件是机器的运动单元
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【判断题】
减速器中的轴、齿轮、箱体都是通用零件。
①
正确
②
错误
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【判断题】
整体式连杆是最小的制造单元,所以它是零件而不是构件。
①
正确
②
错误
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【单选题】
下列不属于机器的工作部分的是
①
数控机床的刀架
②
工业机器人的手臂
③
汽车的轮子
④
空气压缩机
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【判断题】
零件是组成机械的最小运动单元。
①
正确
②
错误
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【判断题】
一部机器可以只含有一个机构,也可以由数个机构组成。
①
正确
②
错误
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【单选题】
()是构成机械的最小单元,也是制造机械的最小单元。
①
机器
②
零件
③
构件
④
部件
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