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【单选题】
Woman: Now, Richard, would you care to explain how the answers to the test questions appeared on your desk? Man: I can't, Professor Harley. Someone must have left them on my desk. Question: What is the man's problem?
A.
He is suspected of cheating.
B.
He left the answers on his desk.
C.
He doesn't know how to explain.
D.
He didn't know the answers to the questions.
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【单选题】35×24与34×25的积 [     ]
A.
相等
B.
35×24的积大
C.
34×25的积大
【简答题】题干 利用单片机的I/O口控制8个发光二极管,用数组实现由左循环依次点亮两盏灯的花样灯效果。 #include //51系列单片机头文件 unsigned char tab[ ]={ , , , , , , , }; //声明数组tab并赋值 delay(unsigned int j) //延时子函数 { while(j--); } main( ) //主程...
【简答题】填一填. 3 4 + 3 4 + 3 4 + 3 4 =______×______; 2 5 + 2 5 + 2 5 =______×______.
【简答题】计算. (34×25+6×25)×29 38×[806÷(106-75)].
【简答题】25×34×4=25×4×34,这里运用了______律.
【简答题】34摄氏度写作______;-25℃读作______.
【简答题】安徽三联学院现任校长是 ( )。
【简答题】25× 3 4 -(-25)× 1 2 +25×[-( 1 2 ) 2 ].
【简答题】根据850÷34=25,直接写出下面各题的商. 850÷3.4=______8.5÷34=______ 85÷3.4=______85÷34=______.
【简答题】(34+25)×(   )=34×4+(   )×4