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【单选题】
设标识符ch,a都被定义为字符型变量,以下赋值语句不正确的是 。
A.
ch ＝ a+’3 ’ ;
B.
ch ＝ ’ch’+’a’ ;
C.
ch=’c’+’h’;
D.
ch+=ch-a
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清单说明主要说明在编制工程量清单时应遵守的规定及注意事项
B.
不同种类的工作应分别列出项目
C.
同一性质但施工部位或条件不同的工作应分别列出项目
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