given the main view and top view of the solid, the correct left view is ( )
which coordinates are related to h projection of a point?
在当前目录存在文本文件test.txt，内容是： life is short, you need python. simple is better than complex. 执行下列语句输出得到的结果是以下哪一项？ with open('test.txt', 'r ') as fp: fp.seek(15) print(fp.readline())
when two part's surface contacting, there had better be only one pair of contact surfaces in the same direction
when a inclined cutting plane is used, the inclined sectional view can be rotated at an angle of less than 45°.
超短波（fm）广播通常通过（ ）传播。
known to have four sets of projections of a sphere with a circular hole, the correct set is ( )
若k为整型，下述while循环执行的次数为多少次？ k = 50 while k > 1: print(k) k = k // 2
select the correct top view ( )
利用列表解析“[x ______2 for x in range(5)]”产生的列表是[0, 1, 4, 9, 16]，请填写合适的算术类型运算符。
定义函数如下： def my_power(x, n = 2): s = 1 while n > 0: n -= 1 s = s * x return s 分别对该函数传递参数，调用my_power(-3)和my_power(3, 3)后运行结果分别是什么？