查询各类别的公司中比该类别最小工资高300元的公司、工资、类别 A: SELECT name, salary, type FROM job AS s1 WHERE salary > (SELECT min(salary) FROM job AS s2 WHERE s1.type = s2.type GROUP BY type) ; B: SELECT name, salary, type FROM job AS s1 WHERE salary > (SELECT min(salary) FROM job AS s2 WHERE s1.type = s2.type ) + 300; C: SELECT name, salary, type FROM job WHERE salary > 300; D: SELECT name, salary, type FROM job AS s1 WHERE salary > (SELECT min(salary) FROM job AS s2 WHERE s1.type = s2.type GROUP BY type) + 300;
查询各类别的公司中比该类别最小工资高300元的公司、工资、类别 A: SELECT name, salary, type FROM job AS s1 WHERE salary > (SELECT min(salary) FROM job AS s2 WHERE s1.type = s2.type GROUP BY type) ; B: SELECT name, salary, type FROM job AS s1 WHERE salary > (SELECT min(salary) FROM job AS s2 WHERE s1.type = s2.type ) + 300; C: SELECT name, salary, type FROM job WHERE salary > 300; D: SELECT name, salary, type FROM job AS s1 WHERE salary > (SELECT min(salary) FROM job AS s2 WHERE s1.type = s2.type GROUP BY type) + 300;
单位脉冲函数的拉普拉斯变换是( ) 未知类型:{'options': ['1', '1/s', '1+1/s', ''], 'type': 102}
单位脉冲函数的拉普拉斯变换是( ) 未知类型:{'options': ['1', '1/s', '1+1/s', ''], 'type': 102}
单位阶跃信号的拉普拉斯变换是 未知类型:{'options': ['1', '1/s', '', '1/(s+1)'], 'type': 102}
单位阶跃信号的拉普拉斯变换是 未知类型:{'options': ['1', '1/s', '', '1/(s+1)'], 'type': 102}
以下能正确计算[tex=6.214x1.071]+K9PPWysZ6L0/aky8eN0Xv5ui2RG6pRvfJ4OIbWQczo998oF54iDwz8tSL4eEyx1[/tex]的程序段是 未知类型:{'options': ['do(i=1;s=1;s=s*i;i++)while(i<=10);', 'do(i=1;s=0;s=s*i;i++)while(i<=10);', 'i=1;s=1;do(s=s*i;i++)while(i<=10);', 'i=1;s=0;do(s=s*i;i++)while(i<=10);'], 'type': 102}
以下能正确计算[tex=6.214x1.071]+K9PPWysZ6L0/aky8eN0Xv5ui2RG6pRvfJ4OIbWQczo998oF54iDwz8tSL4eEyx1[/tex]的程序段是 未知类型:{'options': ['do(i=1;s=1;s=s*i;i++)while(i<=10);', 'do(i=1;s=0;s=s*i;i++)while(i<=10);', 'i=1;s=1;do(s=s*i;i++)while(i<=10);', 'i=1;s=0;do(s=s*i;i++)while(i<=10);'], 'type': 102}
单位斜坡函数t的拉氏变换是() 未知类型:{'options': ['1', ' s', ' 1/s', ' [img=17x34]17e436739fca662.jpg[/img]'], 'type': 102}
单位斜坡函数t的拉氏变换是() 未知类型:{'options': ['1', ' s', ' 1/s', ' [img=17x34]17e436739fca662.jpg[/img]'], 'type': 102}
衰减振荡信号[img=100x21]17e4454f4fd89e4.jpg[/img]的象函数X(s)为 未知类型:{'options': ['17e4454f5a5d8e3.jpg,Re{s}>;-1', ' [img=78x40]17e4454f6450b72.jpg[/img],Re{s}>;1', ' [img=40x34]17e4454e15d1fc0.jpg[/img],Re{s}>;-1', ' [img=43x32]17e4454e202d3a2.jpg[/img],Re{s}>;-1'], 'type': 102}
衰减振荡信号[img=100x21]17e4454f4fd89e4.jpg[/img]的象函数X(s)为 未知类型:{'options': ['17e4454f5a5d8e3.jpg,Re{s}>;-1', ' [img=78x40]17e4454f6450b72.jpg[/img],Re{s}>;1', ' [img=40x34]17e4454e15d1fc0.jpg[/img],Re{s}>;-1', ' [img=43x32]17e4454e202d3a2.jpg[/img],Re{s}>;-1'], 'type': 102}
衰减振荡信号[img=100x21]17e0ba9c84fb574.jpg[/img]的象函数X(s)为 未知类型:{'options': ['17e0ba9c9ab8d44.jpg,Re{s}>;-1', ' [img=78x40]17e0ba9cb1d9a5a.jpg[/img],Re{s}>;1', ' [img=40x34]17e0ba9cc664550.jpg[/img],Re{s}>;-1', ' [img=43x32]17e0ba9cd96a25c.jpg[/img],Re{s}>;-1'], 'type': 102}
衰减振荡信号[img=100x21]17e0ba9c84fb574.jpg[/img]的象函数X(s)为 未知类型:{'options': ['17e0ba9c9ab8d44.jpg,Re{s}>;-1', ' [img=78x40]17e0ba9cb1d9a5a.jpg[/img],Re{s}>;1', ' [img=40x34]17e0ba9cc664550.jpg[/img],Re{s}>;-1', ' [img=43x32]17e0ba9cd96a25c.jpg[/img],Re{s}>;-1'], 'type': 102}
信号[img=176x19]17e446234b70dca.jpg[/img]是周期信号,周期 T= 未知类型:{'options': ['0.5 s', ' 2 s', ' 1 s', ' [img=16x15]17e4365751674d5.jpg[/img] s'], 'type': 102}
信号[img=176x19]17e446234b70dca.jpg[/img]是周期信号,周期 T= 未知类型:{'options': ['0.5 s', ' 2 s', ' 1 s', ' [img=16x15]17e4365751674d5.jpg[/img] s'], 'type': 102}
信号[img=179x19]17e44623582d3fc.jpg[/img]是周期信号,周期 T= 未知类型:{'options': ['0.5 s', ' 2 s', ' 1 s', ' [img=16x15]17e4365751674d5.jpg[/img] s'], 'type': 102}
信号[img=179x19]17e44623582d3fc.jpg[/img]是周期信号,周期 T= 未知类型:{'options': ['0.5 s', ' 2 s', ' 1 s', ' [img=16x15]17e4365751674d5.jpg[/img] s'], 'type': 102}
信号[img=179x19]17e0ba86f735d4c.jpg[/img]是周期信号,周期 T= 未知类型:{'options': ['0.5 s', ' 2 s', ' 1 s', ' [img=16x15]17e0a72cfe82eaa.jpg[/img] s'], 'type': 102}
信号[img=179x19]17e0ba86f735d4c.jpg[/img]是周期信号,周期 T= 未知类型:{'options': ['0.5 s', ' 2 s', ' 1 s', ' [img=16x15]17e0a72cfe82eaa.jpg[/img] s'], 'type': 102}