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【单选题】
.按照信息资源规划理论,信息系统建设应该以()为中心。A.
数据
B.
业务应用
C.
组织部门
D.
计算机软件
手机使用
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举一反三
【简答题】PINs
【单选题】在进行原理图设计 ERC 编译时,系统提示“Floating Input Pins On Net NetU1_12”信息表示( )
A.
器件U1的第12脚没有连接输入信号
B.
器件U1含有悬浮的输入引脚 NetU1_12
【简答题】句型转换。 1. Their pen pals are from Singapore. (改为同义句) Their pen pals __________ __________ Singapore. 2. His aunt can speak English and French . (对划线部分提问) __________ __________ can his aunt speak? 3. Th...
【单选题】数组pins的定义如下:string[ ] pins = new string[4]{"a","b","c","d"}; 执行下列语句后,数组pins的值为 ( ) 。 string[ ] myArr = pins ; myArr [3] = "e";
A.
"a","b","e","d"
B.
"a","b","c","e"
C.
"a","b","c","d"
D.
"e","e","e","d"
【单选题】The diameters of both pins A and B are d, then the larger shearing stress for the two pins is .
A.
4bF/( a π d 2 )
B.
4( a + b )F/( a π d 2 )
C.
4( a + b )F/( b π d 2 )
D.
4 a F/( b π d 2 )
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