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编程:在主函数中从键盘输入若干个数放入数组中,用0结束输入并放在最后一个元素中。定义并调用自定义函数fun,计算数组元素中值为正数的平均值(不包括0)。 提示:自定义函数double fun(int a[]) 例如:数组中元素中的值依次为:39,-47,21,2,-8,15,0,则程序的运行结果为:19.250000。
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举一反三
【多选题】下列有关配制普通混凝土的说法正确的是( )
A.
优选Ⅱ区中砂
B.
选择骨料的级配合理
C.
不用考虑骨料的等级
D.
骨料级配合理,水泥用量少
E.
混凝土用砂,尽量选用细砂,从而节约水泥
【简答题】高层协议决定了一个网络的传输特性
【单选题】乒乓球规则规定，发球时，球应被抛起
A.
离开发球员手掌后，至少上升16cm
B.
至少升高到发球员肩的高度
C.
至少升至网高以上16cm
D.
所升高度不限，但必须垂直上升
【单选题】听力原文：M: There was a phone call for you earlier today. W: Who was it? I have been expecting a call from John all day. Q：What does the woman want to know? (4)
A.
Who made the phone call.
B.
What the call was about.
C.
Who came earlier than he.
D.
When John called him.
【单选题】TV is so often a parents good friend, keeping kids happily occupied so the grownups can cook dinner, answer the phone, or take a shower. But【C1】______ that electronic babysitter is not an educational【...
A.
hopefully
B.
unfortunately
C.
interestingly
D.
unluckily
【单选题】TV is so often a parents good Mend, keeping kids happily occupied so the grownups can cook dinner, answer the phone, or take a shower. But【C1】______that electronic babysitter is not an educational【C2】...
A.
hopefully
B.
unfortunately
C.
interestingly
D.
unluckily
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