下列选项中不符合PHP变量命名规定的是 A: $_Q B: $a_b C: $_8397 D: $100w
下列选项中不符合PHP变量命名规定的是 A: $_Q B: $a_b C: $_8397 D: $100w
下列程序的运行结果是____。（结果不用写单引号或双引号）[img=220x146]1803c8397bad6cb.png[/img]
下列程序的运行结果是____。（结果不用写单引号或双引号）[img=220x146]1803c8397bad6cb.png[/img]
In 1803 the United States purchased Louisiana from _____.
In 1803 the United States purchased Louisiana from _____.
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
_______ weather it is ! _____ the weather is! A: What an bad; How bad B: How bad; What a bad C: What bad; How bad D: What a bad; How bad
_______ weather it is ! _____ the weather is! A: What an bad; How bad B: How bad; What a bad C: What bad; How bad D: What a bad; How bad
In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.
In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.
向量ＡＢ－向量AC-向量BC= A: 向量CB B: 2向量CB C: 4向量CB D: 3向量CB
向量ＡＢ－向量AC-向量BC= A: 向量CB B: 2向量CB C: 4向量CB D: 3向量CB
I’ ve got __________today. A: the bad toothache B: a bad toothache C: bad toothaches D: the bad toothaches
I’ ve got __________today. A: the bad toothache B: a bad toothache C: bad toothaches D: the bad toothaches
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