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The protons in a nucleus being equal with the electrons outside, the atom is electrically

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某5层砖混结构办公楼，首层平面图如下图所示。二层及以上各层除将首层m2的位置改为C2外，其他均与首层平面相同，层高均为3.00m，屋顶盖标高15.0m，女儿墙顶标高1.560m，室外地坪为-0.5m，门窗框外围尺寸及材料见下表。
求：
(1)办公楼建筑面积。
(2)水泥砂浆外墙抹灰工程量。
(3)门窗工程量。

某企业遵循剩余股利政策,其目标资本结构为资产负债率60%。
要求:(1)如果该年的税后利润为60万元,在没有增发新股的情况下,计算企业可以从事的最大投资支出。
(2)如果企业下一年拟投资100万元,计算企业需支付的股利。

听力原文：Man: John Woods here, phoning about the project we discussed earlier. Could you give me a ring so that we can talk about it a bit more？ I've done a few calculations and I'm beginning to wonder whether it's really a practical proposition. I still think the project's got potential, but there are significant additional costs which we hadn't taken into account. So could you get back to me as soon as you can, please？
(21)

分析和计算基层与面层之间的搭接类型和搭接时距。