皮皮学，免费搜题
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【单选题】
以下哪个构件为系统族
A.
风管
B.
风管附件
C.
末端
D.
机械设备
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举一反三
【单选题】为减少铸铁件的变形,防止开裂,大型铸铁在切削加工前应进行 。
A.
软化退火
B.
时效处理
C.
正火
查看完整题目与答案
【单选题】________ you enjoy ________ in the river?
A.
Are, swimming
B.
Do, swimming
C.
Are, to swim
D.
Do, to swim
查看完整题目与答案
【单选题】Do you enjoy at the weekends? [     ]
A.
your
B.
you
C.
yourselves
D.
yours
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【单选题】Do you enjoy   on the beach?
A.
lie
B.
lying
C.
lieing
D.
to lieing
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【单选题】By the time I home, I realized that I my umbrella in the shop.
A.
got; forget
B.
arrived; had left
C.
got; had forgotten
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【单选题】为减少铸铁件的变形,防止开裂,大型铸件在切削加工前应进行( ) 。
A.
软化退火
B.
时效处理（或去应力退火）
C.
正火
查看完整题目与答案
【单选题】By the time I locked the door, I realized I ( )my keys at home
A.
had repaired
B.
have forgotten
C.
had forgotten
D.
had left
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【单选题】By the time I wanted to pay for this sweater, I found I _____ my money in the pocket. [     ]
A.
lost
B.
have lost
C.
had lost
D.
lose
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【单选题】Do you enjoy _______ in China? [     ]
A.
work
B.
working
C.
worked
D.
to work
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【单选题】Do you think everyone _______ their weekends? [     ]
A.
enjoys
B.
enjoy
C.
like
D.
to enjoy
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相关题目：
【单选题】为减少铸铁件的变形,防止开裂,大型铸铁在切削加工前应进行 。
A.
软化退火
B.
时效处理
C.
正火
查看完整题目与答案
【单选题】________ you enjoy ________ in the river?
A.
Are, swimming
B.
Do, swimming
C.
Are, to swim
D.
Do, to swim
查看完整题目与答案
【单选题】Do you enjoy at the weekends? [     ]
A.
your
B.
you
C.
yourselves
D.
yours
查看完整题目与答案
【单选题】Do you enjoy   on the beach?
A.
lie
B.
lying
C.
lieing
D.
to lieing
查看完整题目与答案
【单选题】By the time I home, I realized that I my umbrella in the shop.
A.
got; forget
B.
arrived; had left
C.
got; had forgotten
查看完整题目与答案
【单选题】为减少铸铁件的变形,防止开裂,大型铸件在切削加工前应进行( ) 。
A.
软化退火
B.
时效处理（或去应力退火）
C.
正火
查看完整题目与答案
【单选题】By the time I locked the door, I realized I ( )my keys at home
A.
had repaired
B.
have forgotten
C.
had forgotten
D.
had left
查看完整题目与答案
【单选题】By the time I wanted to pay for this sweater, I found I _____ my money in the pocket. [     ]
A.
lost
B.
have lost
C.
had lost
D.
lose
查看完整题目与答案
【单选题】Do you enjoy _______ in China? [     ]
A.
work
B.
working
C.
worked
D.
to work
查看完整题目与答案
【单选题】Do you think everyone _______ their weekends? [     ]
A.
enjoys
B.
enjoy
C.
like
D.
to enjoy
查看完整题目与答案