把向量X= (1,2,3,4,5,6,7,8,9,10)中第6个元素的值修改为20 的命令是 A: X[6]=20 B: X6=20 C: X{6}=20 D: X(6)=20

下面代码的输出结果是(<br/>). x=20 y=3 print(divmod(x,y)) A: (2, 6) B: (6, 2) C: 2, 6 D: 6, 2

已知X服从二項分布B(n，p)，且E(X)=6，D(X)=4.2，则参数n等于 A: 20 B: 25 C: 12 D: 6

Steeplechase Co sold a machine to a Greek company which it agreed to invoice in €. The sale was made on 1 October 20X6 for €250,000. €125,000 was received on 1 November 20X6 and the balance is due on 1 January 20X7.The exchange rate moved as follows:1 October 20X6 - €0.91 to $1 1 November 20X6-€0.95 to $1 31 December 20X6 - €0.85 to $1At what amount will the receivable be shown in the financial statements at 31 December 20X6? A: $147,059 B: $137,363 C: $131,579 D: $130,586

以下选项中，仅当x的绝对值在1至6范围内时，表达式值为“真”的是: (x>=-6)&&(x<=-1)||(x>=1)&&(x<=6)|(x>=-6)||(x<=-1)||(x>=1)||(x<=6)|(x>=1)&&(x<=6)&&(x>=-6)&&(x<=-1)|(x>=1)&&(x<=6)||(x>=-1)&&(x<=-6)

以下选项中，当且仅当x的绝对值在1至6范围内表达式值为"真"的是（ ）。 A: (x>=-6)&&(x<=-1)||(x>=1)&&(x<=6) B: (x>=1)&&(x<=6)&&(x>=-6)&&(x<=-1) C: (x>=-6)||(x<=-1)||(x>=1)||(x<=6) D: (x>=1)&&(x<=6)||(x>=-1)&&(x<=-6)

假设x=20，y=6，则表达式x%y的值是（ ）。 A: 2 B: 3 C: 1 D: 4

A原子的结构示意图为。则X、Y及该原子3p能级上的电子数分别为（） A: 18、6、4 B: 20、8、6 C: 18、8、6 D: 15~20、3~8、1~6

在SQL语句中,与x in (20, 30) 等价的表达式是( )。 A: x=20 and x=30 B: x>20 and x<30 C: x>20 or x <30 D: x=20 or x=30

‎在单元格输入_________，该单元格显示0.3。‌ A: 6/20 B: =6/20 C: “6/20” D: =“6/20”