对称三相负载三角形连接,若相电流iab=10[img=41x45]17e0b6a8592d8be.jpg[/img] sin(ωt十30o)A,则线电流iC为_______。 A: 10sinωt A B: 30 sin(ωt+60o) A C: 30 sin(ωt+120 o ) A D: 30sinωt A
对称三相负载三角形连接,若相电流iab=10[img=41x45]17e0b6a8592d8be.jpg[/img] sin(ωt十30o)A,则线电流iC为_______。 A: 10sinωt A B: 30 sin(ωt+60o) A C: 30 sin(ωt+120 o ) A D: 30sinωt A
下列程序段的时间复杂度为( )。for(i=0; i A. O(m*n*t) B. O(m+n+t) C. O(m+n*t) D. O(m*t+n) 答案:A 答案解析: 难易: 难 知识点: A: O(m*n*t) B: O(m+n+t) C: O(m+n*t) D: O(m*t+n)
下列程序段的时间复杂度为( )。for(i=0; i A. O(m*n*t) B. O(m+n+t) C. O(m+n*t) D. O(m*t+n) 答案:A 答案解析: 难易: 难 知识点: A: O(m*n*t) B: O(m+n+t) C: O(m+n*t) D: O(m*t+n)
堆排序之自底向上构造初始堆的时间复杂度为( )。 A: T(n)=O(n) B: T(n)=O(log2n) C: T(n)=O(nlog2n) D: T(n)=O(n0.5)
堆排序之自底向上构造初始堆的时间复杂度为( )。 A: T(n)=O(n) B: T(n)=O(log2n) C: T(n)=O(nlog2n) D: T(n)=O(n0.5)
tôt, tome, feu, fleur四个单词中包含的元音分别是: A: [o], [ɔ], [ø], [œ] B: [ɔ], [o], [œ], [ø] C: [ø], [o], [ɔ], [œ] D: [o], [œ], [ø], [ɔ]
tôt, tome, feu, fleur四个单词中包含的元音分别是: A: [o], [ɔ], [ø], [œ] B: [ɔ], [o], [œ], [ø] C: [ø], [o], [ɔ], [œ] D: [o], [œ], [ø], [ɔ]
求n!问题,表示算法的复杂性的递归函数下述正确的是? A: T(n)=O(1),当n=1 T(n)=T(n-1)+O(1),当n>1 B: T(n)=O(1),当n=1 T(n)=nT(n-1)+O(1),当n>1 C: T(n)=O(1),当n=1 T(n)=2T(n/2)+O(1),当n>1 D: T(n)=O(1),当n=1 T(n)=T(n/2)+O(n),当n>1
求n!问题,表示算法的复杂性的递归函数下述正确的是? A: T(n)=O(1),当n=1 T(n)=T(n-1)+O(1),当n>1 B: T(n)=O(1),当n=1 T(n)=nT(n-1)+O(1),当n>1 C: T(n)=O(1),当n=1 T(n)=2T(n/2)+O(1),当n>1 D: T(n)=O(1),当n=1 T(n)=T(n/2)+O(n),当n>1
如图,AT切⊙O于T,直线AO交⊙O于B、C且∠TAB=40°,则∠C的度数为( ) A: 25° B: 30° C: 40° D: 50°
如图,AT切⊙O于T,直线AO交⊙O于B、C且∠TAB=40°,则∠C的度数为( ) A: 25° B: 30° C: 40° D: 50°
If an algorithm has running time $T(n)= O(n\log n)$, then $T(n)$ may most likely satisfy that _____. A: $T(n) = 4T(n/4) + O(n^2)$ B: $T(n) = 4T(n/4) + O(n) $ C: $T(n) = 3T(n/2)+O(n) $ D: $T(n) = 2T(n/2) + O(\log n)$
If an algorithm has running time $T(n)= O(n\log n)$, then $T(n)$ may most likely satisfy that _____. A: $T(n) = 4T(n/4) + O(n^2)$ B: $T(n) = 4T(n/4) + O(n) $ C: $T(n) = 3T(n/2)+O(n) $ D: $T(n) = 2T(n/2) + O(\log n)$
二分搜索算法的时间复杂度函数,下述那个正确? A: T(n)=O(1),当n=0<br> T(n)=2T(n/2)+O(1),当n>1 B: T(n)=O(1),当n=0<br> T(n)=2T(n/2)+O(n),当n>1 C: T(n)=O(1),当n=0<br> T(n)=T(n/2)+O(1),当n>1 D: T(n)=O(1),当n=0<br> T(n)=T(n/2)+O(n),当n>1
二分搜索算法的时间复杂度函数,下述那个正确? A: T(n)=O(1),当n=0<br> T(n)=2T(n/2)+O(1),当n>1 B: T(n)=O(1),当n=0<br> T(n)=2T(n/2)+O(n),当n>1 C: T(n)=O(1),当n=0<br> T(n)=T(n/2)+O(1),当n>1 D: T(n)=O(1),当n=0<br> T(n)=T(n/2)+O(n),当n>1
The sentences that follow the stress pattern “o O o o o O o o o ” are ( ). A: I took it to a watch repairer B: He didn't want to talk about it C: Let's open the other one D: He didn't think it interesting
The sentences that follow the stress pattern “o O o o o O o o o ” are ( ). A: I took it to a watch repairer B: He didn't want to talk about it C: Let's open the other one D: He didn't think it interesting
【单选题】设图中B点即变压器二次侧计算负荷为 P 30(2) 、 Q 30(2) ,则A点即变压器一次侧计算负荷 P 30(1) 、 Q 30(1) 为()。 A. P 30(1) = P 30(2) + ΔP T , Q 30(1) = Q 30(2) + ΔQ T B. P 30(1) = P 30(2) - ΔP T , Q 30(1) = Q 30(2) - ΔQ T C. P 30(1) = P 30(2) + ΔQ T , Q 30(1) = Q 30(2) + ΔP T D. P 30(1) = P 30(2) - ΔQ T , Q 30(1) = Q 30(2) - ΔP T
【单选题】设图中B点即变压器二次侧计算负荷为 P 30(2) 、 Q 30(2) ,则A点即变压器一次侧计算负荷 P 30(1) 、 Q 30(1) 为()。 A. P 30(1) = P 30(2) + ΔP T , Q 30(1) = Q 30(2) + ΔQ T B. P 30(1) = P 30(2) - ΔP T , Q 30(1) = Q 30(2) - ΔQ T C. P 30(1) = P 30(2) + ΔQ T , Q 30(1) = Q 30(2) + ΔP T D. P 30(1) = P 30(2) - ΔQ T , Q 30(1) = Q 30(2) - ΔP T