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【多选题】
关于钢筋混凝土墙钢筋绑扎的说法正确的是（）A.
墙的竖直钢筋每段长度：当钢筋直径＜12mm时，不宜超过4m；钢筋直径＞12mm时，不宜超过5m。
B.
墙的水平钢筋每段长度不宜超过8m。
C.
墙内的钢筋网绑扎时，钢筋弯钩应朝向混凝土外。
D.
墙内的钢筋网双向均为主筋时，全部交叉点均应绑扎牢固。
E.
墙内采用双层钢筋网时，两层钢筋间应设置撑铁，撑铁可用ø6～10mm的钢筋制成，撑铁间距约为1m，相互错开排列。
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【单选题】American schools are divided into .
A.
single sex schools and coeducation schools
B.
national schools and state-run schools
C.
public schools and vocational schools
D.
public schools and private schools
【单选题】The American Government is involved in the program because ______.
A.
the schools are public schools
B.
the Government is to finance the program
C.
the Government grants visas to the foreign teachers
D.
the program involves bilingual education
【简答题】Most American students go to traditional public schools．There are about 88, 000 public schools, all over the US．Some students attend about 3000 independent public schools called charter schools． Chart...
【单选题】American schools are divided into（）
A.
public schools and private ones
B.
Public schools,private schools and community schools
C.
coeducation schools and single sex schools.
D.
national schools and state-run schools
【单选题】What is the passage mainly about?
A.
The intellectual development of American schools.
B.
The independence of American schools from Europe.
C.
The central control of American schools.
D.
The role of local authority in American schools.
【简答题】WORD2000默认的文件扩展名为() A、Dot B、XLs C、Doc D、TXt
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