判断主视图的正误[img=366x326]1803d236ba5564a.png[/img]
判断主视图的正误[img=366x326]1803d236ba5564a.png[/img]
In 1803 the United States purchased Louisiana from _____.
In 1803 the United States purchased Louisiana from _____.
In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.
In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.
3,12,33,72,135,() A: 236 B: 228 C: 210 D: 192
3,12,33,72,135,() A: 236 B: 228 C: 210 D: 192
设A为m×n矩阵,B为n×m矩阵,且m>n,则必有() A: |AB|=0 B: |BA|=0 C: |AB|=|BA| D: ||BA|BA|=|BA||BA|
设A为m×n矩阵,B为n×m矩阵,且m>n,则必有() A: |AB|=0 B: |BA|=0 C: |AB|=|BA| D: ||BA|BA|=|BA||BA|
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
236 Which of the following fogs lasts the longest? _____ .
236 Which of the following fogs lasts the longest? _____ .
[imgwidth="236"height="80"src="http://p....18da02f9c8c14f.png"]
[imgwidth="236"height="80"src="http://p....18da02f9c8c14f.png"]
铀236核的裂变会产生()。
铀236核的裂变会产生()。