Who are Mrs. Smith and Mrs. Jones mentioned in the first paragraph?
A.Shop assistants.
B.Friends of the shop manager's.
C.Two regular customers of the store.
D.People representing any of the regular customers of the old general store.
第2题
A.楼板的配筋有‘单向板’和‘双向板’两种
B.单向板在一个方向上布置‘主筋’,而在另一个方向上配置‘分布筋’
C.双向板在两个互相垂直的方向上都布置‘主筋’
D.双层布筋就是在板的下部布置贯通纵筋,在板周边布置‘负筋’
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