When will the meeting begin
A: At 1:30 p.m.. B. At 2:00 p.m..
B: At 2:30 p. m..
A: At 1:30 p.m.. B. At 2:00 p.m..
B: At 2:30 p. m..
举一反三
- When will the meeting begin A: At 1:30 p.m.. B: At 2:00 p.m.. C: At 2:30 p. m..
- Woman: When is the visit to the museum tomorrow? Is it at 8:30 in the morning?Man: No, it’s at 1:30 in the afternoon. The meeting is at 8:30.When will they visit the museum tomorrow?（） A: At 8:30 a.m.. B: At 9:30 a.m.. C: At 1:30 p.m.. D: At 2:30 p.m..
- 【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
- 求[2，1000]素数的个数，可以使用的命令有（）。 A: m=2:1000; p=isprime(m); sum(p) B: p=primes(1000); length(p) C: m=2:1000; p=m(isprime(m)); length(p) D: m=2:1000; p=find(isprime(m)); length(p)
- 设P={1，2，3)，M={1，3，5)，则P\M=( ) A: {5} B: {2} C: {1} D: {3}