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【简答题】
普通螺纹的牙型代号是( )。
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皮皮学刷刷变学霸
举一反三
【简答题】____ 是用竹紫或森素、铁素等为骨干相拼悬品起的大桥。多建于水流急、不易做桥墩的陡岸险谷,主耍见于西南地区。
【单选题】在西方经济中长期生产是指
A.
在很长时间内进行的生产
B.
生产周期很长的生产
C.
生产者来不及调整全部生产要素的数量，至少有一种生产要素的数量固定不变
D.
生产者可以调整全部生产要素的数量
【单选题】Plato was a superb writer, and his works are part of the world's great literature. Most of his existing work is _______ dialogs and letters.
A.
in the name of
B.
in the face of
C.
in the charge of
D.
in the form of
【简答题】Ten weeks _____ (be) needed to complete the task.
【单选题】Plato was a superb writer, and his works are part of the world's great lierature. Most of his existing work is ______ dialogs and letters.
A.
in the form of
B.
in the from of
C.
in the matter of
D.
in the detail
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