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【多选题】
下面作家中属于“唐宋八大家”的有A.
B.
C.
D.
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反馈参考答案：
举一反三
【单选题】The important meeting ___ on a cold morning last year.
A.
was hold
B.
was held
C.
held
D.
had
【单选题】The important meeting ___ on a cold morning last year.
A.
was had
B.
was held
C.
held
D.
had
【简答题】据幼儿对材料操作方法的不同,可以将材料分为( )和( )两种。
【单选题】The sports meeting ______ on a cold morning last year.
A.
was had
B.
was held
C.
held
D.
had
【单选题】The important meeting ___ on a cold morning last year.
A.
had
B.
was had
C.
held
D.
was held
【单选题】船用测深仪、计程仪
A.
6.1 船用回声测深仪原理及接口
B.
船用回声测深仪在设计制造时，以________米／秒作为标准声速，对水中
C.
影响最大的是________。
D.
330，温度
E.
1500，含盐量
F.
330，含盐量
G.
1500，温度
【简答题】在杨氏双缝干涉实验中，若双缝间距为0.2mm，屏幕到缝的距离为1.5m，若入射光的波长为600nm，则相邻明纹间距为__________mm。(精确到小数点后面1位)
【单选题】杨氏双缝干涉实验中,若入射光的波长为550nm, 双缝间距为0.33cm,缝屏间距为3m时,则干涉条纹间距为( )。
A.
5x10-3m
B.
5x10-4m
C.
5.5x10-3m
D.
5.5x10-4m
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