background:url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层() A: 2、png B: 1、jpg C: 3、png D: 4、jpg
background:url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层() A: 2、png B: 1、jpg C: 3、png D: 4、jpg
inta=’2’;a的值是()。 A: 1 B: 50 C: 49 D: 2
inta=’2’;a的值是()。 A: 1 B: 50 C: 49 D: 2
____ 49 ____ 20 ____ 69 ____ 2 {0,2}
____ 49 ____ 20 ____ 69 ____ 2 {0,2}
sum=0for i in range(0,100): if i%2==0: sum-=i else: sum+=iprint(sum) A: -50 B: 49 C: 50 D: -49
sum=0for i in range(0,100): if i%2==0: sum-=i else: sum+=iprint(sum) A: -50 B: 49 C: 50 D: -49
png的最优值是（） A: -2 B: -6 C: -45/4 D: -7
png的最优值是（） A: -2 B: -6 C: -45/4 D: -7
国际网球联合会成立于 A: 1903 B: 1803 C: 1913 D: 1923
国际网球联合会成立于 A: 1903 B: 1803 C: 1913 D: 1923
霍尔效应哪一年发现的？ A: 1881 B: 1879 C: 1803 D: 1831
霍尔效应哪一年发现的？ A: 1881 B: 1879 C: 1803 D: 1831
The earth is _____ of the moon. A: 49 times the size B: 49 times the large C: 49 times the small D: 49 the size
The earth is _____ of the moon. A: 49 times the size B: 49 times the large C: 49 times the small D: 49 the size
In 1803 the United States purchased Louisiana from _____.
In 1803 the United States purchased Louisiana from _____.
The earth is _______ of the moon. A: 49 times the size B: 49 times size C: 49 times as big as that D: 49 times big
The earth is _______ of the moon. A: 49 times the size B: 49 times size C: 49 times as big as that D: 49 times big