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【多选题】
下列关于组合配筋砖砌体的说法,正确的是 。
A.
面层混凝土强度等级采用C20,面层水泥砂浆强度等级不宜低于M10
B.
砂浆面层的厚度可采用30~45mm
C.
当面层厚度大于45mm时,其面层宜采用混凝土
D.
竖向受力钢筋宜采用HRB335级钢筋,对于混凝土面层,亦可采用HRB335级钢筋
E.
竖向受力钢筋的直径不应小于10mm,钢筋的净间距不应小于530mm
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举一反三
【多选题】根据增值税法律制度的规定,销售下列货物应当按增值税低税率9%征收的有:
A.
初级农产品
B.
图书
C.
暖气
D.
电力
【单选题】Is this the school _____ you studied ten years ago? [     ]
A.
the one that
B.
that
C.
in that
D.
in which
【单选题】Is this the school ________ you studied ten years ago? [    ]
A.
in which
B.
that
C.
in that
D.
the one that
【单选题】Is this the school _______ you worked last year?
A.
where
B.
that
C.
the one
D.
which
【单选题】Is this the school we visited last time?
A.
that
B.
the one
C.
the one which
D.
where
【单选题】以下哪一个表达式不能取出字符串s1='file1.txt'中的字符'.':
A.
s1[5:6]
B.
s1[6:7]
C.
s1[-4:-3]
D.
s1[s1.find('.'):s1.find('.')+1]
【多选题】根据增值税法律制度的规定,销售下列货物应当按增值税低税率9%征收的有( )
A.
粮食
B.
图书
C.
暖气
D.
电力
【单选题】Is ____  some German friends visited  last week? [     ]
A.
this school
B.
this the school
C.
this school one
D.
this school where
【单选题】Is some German friends visited last week ?
A.
this school where
B.
this the school where
C.
this the school
D.
this school
【简答题】一个养鸡场四月份卖出 1200只鸡 , 五月份卖出的比四月份的 2倍还少200只 , 两个月一共卖出多少只鸡 ?
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