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【简答题】
IDL程序运行方式有交互式和程序式。程序式包括:脚本、主程序、过程、和函数。请分别使用以上四种方式写出程序,输出从1到N(正整数)的和、平方和。 提示: (1)如果是脚本,可使用Read, N, Prompt="Enter N: ",先读入某个确定的N。输出结果 (2)如果使用主程序,则N读入方法同上,输出结果 (3)如果使用过程,则N使用一个位置参数确定,输出结果 (4)如果使用函数,则N确定方法同过程,返回结果
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【简答题】8 There's a ____ to view children in the UK, and in the Western world in general, as ____ and ____ . But this isn't the case throughout the world. In many societies children work and contribute to the...
【单选题】What isn't said about the case with PCBs?
A.
An accumulation of PCBs in the human body is the direct reason of the cancer and other severe disorders.
B.
PCBs can't be disintegrated using conventional waste-treatment ways.
C.
PCBs are degraded by natural processes very slowly.
D.
PCBs have been found in high contents in the fatty tissues of fish.
【简答题】OHV engines almost always have only 2 valves per ____but this isn't always the case.
【简答题】Isn't the case ______________big to be there?
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