设关系模式SCG (S#, C#, grade)中S#为学生学号,C#为课程号,grade为某学号学生学某号课程的考试成绩。今要查询每门课程的平均成绩,且要求查询的结果按平均成绩升序排列,平均成绩相同时,按课程号降序排列,则用SQL查询语言应为 (1) 。 若查询的结果仅限于平均分数超过80分的,则应 (2) 。 (1) A: Select C#,AVG(grad From SCG Group by grade Order by 2,C# Desc B: Select C#,AVG(grad From SCG Group by C# Order by 2,C# Desc C: Select C#,AVG(grad From SCG Where C#,AVG Desc Group by grade D: Select C#,AVG(grad From SCG Group by AVG(grad Order by 2,C# Desc
设关系模式SCG (S#, C#, grade)中S#为学生学号,C#为课程号,grade为某学号学生学某号课程的考试成绩。今要查询每门课程的平均成绩,且要求查询的结果按平均成绩升序排列,平均成绩相同时,按课程号降序排列,则用SQL查询语言应为 (1) 。 若查询的结果仅限于平均分数超过80分的,则应 (2) 。 (1) A: Select C#,AVG(grad From SCG Group by grade Order by 2,C# Desc B: Select C#,AVG(grad From SCG Group by C# Order by 2,C# Desc C: Select C#,AVG(grad From SCG Where C#,AVG Desc Group by grade D: Select C#,AVG(grad From SCG Group by AVG(grad Order by 2,C# Desc
设关系模式SCG (S#, C#, grade)中S#为学生学号,C#为课程号,grade为某学号学生学某号课程的考试成绩。今要查询每门课程的平均成绩,且要求查询的结果按平均成绩升序排列,平均成绩相同时,按课程号降序排列,则用SQL查询语言应为 (1) 。 若查询的结果仅限于平均分数超过80分的,则应 (2) 。 (1) A: Select C#,AVG(grade) From SCG Group by grade Order by 2,C# Desc B: Select C#,AVG(grade) From SCG Group by C# Order by 2,C# Desc C: Select C#,AVG(grade) From SCG Where C#,AVG Desc Group by grade D: Select C#,AVG(grade) From SCG Group by AVG(grade) Order by 2,C# Desc
设关系模式SCG (S#, C#, grade)中S#为学生学号,C#为课程号,grade为某学号学生学某号课程的考试成绩。今要查询每门课程的平均成绩,且要求查询的结果按平均成绩升序排列,平均成绩相同时,按课程号降序排列,则用SQL查询语言应为 (1) 。 若查询的结果仅限于平均分数超过80分的,则应 (2) 。 (1) A: Select C#,AVG(grade) From SCG Group by grade Order by 2,C# Desc B: Select C#,AVG(grade) From SCG Group by C# Order by 2,C# Desc C: Select C#,AVG(grade) From SCG Where C#,AVG Desc Group by grade D: Select C#,AVG(grade) From SCG Group by AVG(grade) Order by 2,C# Desc
【单选题】MSP430单片机的低功耗模式是通过设置 () 来关闭系统时钟和CPU A. 状态寄存器SR中的SCG1、SCG0、GIE和CPUOFF B. 状态寄存器SR中的SCG1、SCG0、OSCOFF和GIE C. 状态寄存器SR中的SCG1、SCG0、OSCOFF和CPUOFF D. 状态寄存器SR中的N、S、C和V
【单选题】MSP430单片机的低功耗模式是通过设置 () 来关闭系统时钟和CPU A. 状态寄存器SR中的SCG1、SCG0、GIE和CPUOFF B. 状态寄存器SR中的SCG1、SCG0、OSCOFF和GIE C. 状态寄存器SR中的SCG1、SCG0、OSCOFF和CPUOFF D. 状态寄存器SR中的N、S、C和V
MSP430通过设置SR的()控制位,使其由活动模式进入到相应的低功耗模式。 A: GIE、N、Z和C B: GIE、C、SCG1和SCG0 C: C、Z、N和V D: SCG1、SCG0、OSCOFF和CPUOFF
MSP430通过设置SR的()控制位,使其由活动模式进入到相应的低功耗模式。 A: GIE、N、Z和C B: GIE、C、SCG1和SCG0 C: C、Z、N和V D: SCG1、SCG0、OSCOFF和CPUOFF
SCG0,SCG1 时钟控制位 ,SGC1置位关闭SMCLK ,SGC0 置位关闭频率发生器。
SCG0,SCG1 时钟控制位 ,SGC1置位关闭SMCLK ,SGC0 置位关闭频率发生器。
EN-DC中,下面哪种测量目前协议未定义() A: MCG下进行2/3G邻区测量 B: MCG下进行LTE邻区测量 C: SCG下进行LTE邻区测量 D: SCG下进行NR邻区测量
EN-DC中,下面哪种测量目前协议未定义() A: MCG下进行2/3G邻区测量 B: MCG下进行LTE邻区测量 C: SCG下进行LTE邻区测量 D: SCG下进行NR邻区测量
以下哪些是scctallureinta消息中可能揍带的原因值?() A: ScG重配置失败 B: SRB1完整性校验失败 C: T310超时 D: RLC重传次数达到最大值
以下哪些是scctallureinta消息中可能揍带的原因值?() A: ScG重配置失败 B: SRB1完整性校验失败 C: T310超时 D: RLC重传次数达到最大值
以下那个5G流程不需要随机接入 A: 专用承载建立 B: 切换 C: SCG添加或者变更场景,UE在NR侧做随机接入 D: 波束恢复,当UE PHY层检测到波束失步时,会通知UE MAC发起RA
以下那个5G流程不需要随机接入 A: 专用承载建立 B: 切换 C: SCG添加或者变更场景,UE在NR侧做随机接入 D: 波束恢复,当UE PHY层检测到波束失步时,会通知UE MAC发起RA
for i in range(b.max_row): for j in range(b.max_column): print(b.cell(row=i,column=j).value)上面语句运行的结果是:__________。 A: 1 1 1 1 1 1 1 1 1 1 B: 1111111111 C: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 D: 出现异常
for i in range(b.max_row): for j in range(b.max_column): print(b.cell(row=i,column=j).value)上面语句运行的结果是:__________。 A: 1 1 1 1 1 1 1 1 1 1 B: 1111111111 C: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 D: 出现异常
【单选题】CDMA通信的基站,假定基站A的码片序列是+1 +1 +1 -1 -1 +1 -1 -1,基站发射bit为101时,实际发射的信号是 A. +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 –1 –1 –1 +1 +1 –1 +1 +1 B. +1 +1 +1 -1 -1 +1 -1 -1 –1 –1 –1 +1 +1 –1 +1 +1 +1 +1 +1 -1 -1 +1 -1 -1 C. +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 D. –1 –1 –1 +1 +1 –1 +1 +1 –1 –1 –1 +1 +1 –1 +1 +1 –1 –1 –1 +1 +1 –1 +1 +1
【单选题】CDMA通信的基站,假定基站A的码片序列是+1 +1 +1 -1 -1 +1 -1 -1,基站发射bit为101时,实际发射的信号是 A. +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 –1 –1 –1 +1 +1 –1 +1 +1 B. +1 +1 +1 -1 -1 +1 -1 -1 –1 –1 –1 +1 +1 –1 +1 +1 +1 +1 +1 -1 -1 +1 -1 -1 C. +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 +1 +1 +1 -1 -1 +1 -1 -1 D. –1 –1 –1 +1 +1 –1 +1 +1 –1 –1 –1 +1 +1 –1 +1 +1 –1 –1 –1 +1 +1 –1 +1 +1