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import matplotlib.pyplot as plt
plt.scatter(1, 2, 3], 3, 4, 5], s=10, marker='^')
plt.show()
以上代码运行后,展示了一个带有( )标记的散点图。
选项: A:正方形
B:星形
C:菱形
D:正三角形
Import matplotlib.pyplot as plt
Plt.subplots(2, 2, sharex=________)
Plt.show()
以上程序的横线处填充以下哪个取值,可以共享每列子图的坐标轴?
选项: A:'col'
B:'row'
C:'all'
D:'none'
import matplotlib.pyplot as plt
plt.subplots(2, 2, sharex=________)
plt.show()
以上程序的横线处填充以下哪个取值,可以共享每列子图的坐标轴?( )
选项: A:'col'
B:'row'
C:'all'
D:'none'
import matplotlib.pyplot as plt
plt.subplots(2, 2, sharex=________)
plt.show()
以上程序的横线处填充以下哪个取值,可以共享每列子图的坐标轴?
选项: A:'col' B:'row' C: 'all' D:'none'import matplotlib.pyplot as plt
plt.subplots(2, 2, sharex=________)
plt.show()
以上程序的横线处填充以下哪个取值,可以共享每列子图的坐标轴?( )
选项: A:A. 'col' B:A. 'row' C:A. 'all' D:A. 'none'Import numpy as np
ArrOne = np.array([[1, 2, 3, 4], [4, 5, 6, 6]])
ArrTwo = np.array([[1]])
Print(ArrOne-ArrTwo)
选项:A、[[0 1 2 3] [3 4 5 5]]
B、[[1 2 3 4] [4 5 6 6]]
C、[[0 1 2 3], [3 4 5 5]]
D、[0 1 2 3] [3 4 5 5]
E、 不能运算,会出现ValueErrorByte]a= "abcd" . getBytes();
Try{ FileOutputStream out = new FileOutputStream(f);
Out.write(a);
Out.close();
FileInputStream in = new FileInputStream(f);
Byte] tom= new byte 3];
Int m= in. read(tom, 0,3);
System. out. println(m);//【代码1】
String s = new String(tom, 0, 3);
System. out. println(s); //代码2】
M= in.read(tom, 0, 3);
System. out. println(m);//代码3】
S = new String( tom, 0,3);
System. out. println(s);//【代码4】
Catch( IOException e){}
}
}
">9.请说出E类中标注的【代码1】~【代码4】的输出结果。Import java.io. *;
Public class E{
Public static void main(String args ]){
Int n= - 1;
File f = new File( " hello.txt");
Byte]a= "abcd" . getBytes();
Try{ FileOutputStream out = new FileOutputStream(f);
Out.write(a);
Out.close();
FileInputStream in = new FileInputStream(f);
Byte] tom= new byte 3];
Int m= in. read(tom, 0,3);
System. out. println(m);//【代码1】
String s = new String(tom, 0, 3);
System. out. println(s); //代码2】
M= in.read(tom, 0, 3);
System. out. println(m);//代码3】
S = new String( tom, 0,3);
System. out. println(s);//【代码4】
Catch( IOException e){}
}
}
Import numpy as np
Import matplotlib.pyplot as plt
Data = np.array(20, 50, 10, 15, 30, 55])
Pie_labels = np.array('A', 'B', 'C', 'D', 'E', 'F'])
Plt.pie(data, labels=pie_labels)
Plt.show()
B:Import numpy as np
Import matplotlib.pyplot as plt
Data = np.array(20, 50, 10, 15, 30, 55])
Pie_labels = np.array('A', 'B', 'C', 'D', 'E', 'F'])
Plt.pie(data, radius=1.5, labels=pie_labels)
Plt.show()
C:Import numpy as np
Import matplotlib.pyplot as plt
Data = np.array(20, 50, 10, 15, 30, 55])
Pie_labels = np.array('A', 'B', 'C', 'D', 'E', 'F'])
Plt.pie(data, radius=1.5, explode=0, 0.2, 0, 0, 0, 0],labels=pie_labels)
Plt.show()
D:Import numpy as np
Import matplotlib.pyplot as plt
Data = np.array(20, 50, 10, 15, 30, 55])
Pie_labels = np.array('A', 'B', 'C', 'D', 'E', 'F'])
Plt.pie(data, radius=1.5, wedgeprops={'width': 0.6},labels=pie_labels)
Plt.show()
out.write(a);
out.close();
FileInputStream in = new FileInputStream(f);
byte ] tom = new byte3];
int m = in.read(tom,0,3);
System.out.println(m); //代码1] (3)
String s = new String(tom,0,3);
System.out,println(s): //代码2](abc)
m= in.read(tom,0,3);
System.out.println(m) //代码3] (1)
s =new String(tom,0,3)
System.out.println(s): //代码4] (abc)
catch(IOException e)(]
">11.请说出 E类中标注的代码 1]一代码4]的输出结果import java.io.;public class E(public static void main(String args ]) (intn=-1;File f = new File("hello.txt");byte] a= "abcd".getBytes();try| FileOutputStream out = new FileOutputStream(f);
out.write(a);
out.close();
FileInputStream in = new FileInputStream(f);
byte ] tom = new byte3];
int m = in.read(tom,0,3);
System.out.println(m); //代码1] (3)
String s = new String(tom,0,3);
System.out,println(s): //代码2](abc)
m= in.read(tom,0,3);
System.out.println(m) //代码3] (1)
s =new String(tom,0,3)
System.out.println(s): //代码4] (abc)
catch(IOException e)(]
1, 2, 3, 4, 5]
1, 2, 3], 4, 5]]
C:
1, 2, 3], 4, 5]
1, 2, 3, 4, 5]]
让用户输入一个自然数n,如果n为奇数,输出表达式1+1/3+1/5+…+1/n的值;如果n为偶数,输出表达式1/2+1/4+1/6+…+1/n的值。输出结果保留2位小数。
示例如下(其中数据仅用于示意):
输入:
4
输出:
0.75
提示:建议使用本机提供的Python集成开发环境IDLE填写,调试及验证程序。
#
# 在____________上补充代码
#
def f(n):
。___________(1)___________
。if ___________(2)___________:
。。。for i in range(1, n+1, 2):
。。。。s += 1/i
。else:
。。。for i in range(2, n+1, 2):
。。。。s += 1/i
。return s
n = int(input())
print(___________(3)___________)
abstract class Takecare {
protected void speakHello() {} //1
public abstract static void cry(); //2
static int f(){ return 0 ;} //3
abstract float g(); //4
}
选项: A:1
B:2
C:3
D:4
Abstract class Takecare {
protected void speakHello() {} //1
public abstract static void cry(); //2
static int f(){ return 0 ;} //3
abstract float g(); //4
}
选项: A:1
B:2
C:3
D:4
import numpy as np
import matplotlib.pyplot as plt
data = np.array(20, 50, 10, 15, 30, 55])
pie_labels = np.array('A', 'B', 'C', 'D', 'E', 'F'])
plt.pie(data, labels=pie_labels)
plt.show()
B:import numpy as np
import matplotlib.pyplot as plt
data = np.array(20, 50, 10, 15, 30, 55])
pie_labels = np.array('A', 'B', 'C', 'D', 'E', 'F'])
plt.pie(data, radius=1.5, labels=pie_labels)
plt.show()
C:import numpy as np
import matplotlib.pyplot as plt
data = np.array(20, 50, 10, 15, 30, 55])
pie_labels = np.array('A', 'B', 'C', 'D', 'E', 'F'])
plt.pie(data, radius=1.5, explode=0, 0.2, 0, 0, 0, 0],labels=pie_labels)
plt.show()
D:import numpy as np
import matplotlib.pyplot as plt
data = np.array(20, 50, 10, 15, 30, 55])
pie_labels = np.array('A', 'B', 'C', 'D', 'E', 'F'])
plt.pie(data, radius=1.5, wedgeprops={'width': 0.6},labels=pie_labels)
plt.show()
Plt.bar(x, y2, bottom=y1, tick_label="A", "B", "C", "D"])
以上代码中bar()函数的bottom参数的作用是( )。
选项: A:将后绘制的柱形置于先绘制的柱形下方
B:将后绘制的柱形置于先绘制的柱形上方
C:将后绘制的柱形置于先绘制的柱形左方
D:将后绘制的柱形置于先绘制的柱形右方
">17.请阅读下面一段代码:Plt.bar(x, y1, tick_label="A", "B", "C", "D"])
Plt.bar(x, y2, bottom=y1, tick_label="A", "B", "C", "D"])
以上代码中bar()函数的bottom参数的作用是( )。
选项: A:将后绘制的柱形置于先绘制的柱形下方
B:将后绘制的柱形置于先绘制的柱形上方
C:将后绘制的柱形置于先绘制的柱形左方
D:将后绘制的柱形置于先绘制的柱形右方
plt.bar(x, y2, bottom=y1, tick_label="A", "B", "C", "D"])
以上代码中bar()函数的bottom参数的作用是
选项: A:将后绘制的柱形置于先绘制的柱形下方
B:将后绘制的柱形置于先绘制的柱形上方
C:将后绘制的柱形置于先绘制的柱形左方
D:将后绘制的柱形置于先绘制的柱形右方
">18.请阅读下面一段代码:plt.bar(x, y1, tick_label="A", "B", "C", "D"])
plt.bar(x, y2, bottom=y1, tick_label="A", "B", "C", "D"])
以上代码中bar()函数的bottom参数的作用是
选项: A:将后绘制的柱形置于先绘制的柱形下方
B:将后绘制的柱形置于先绘制的柱形上方
C:将后绘制的柱形置于先绘制的柱形左方
D:将后绘制的柱形置于先绘制的柱形右方