资源简介

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物理参考答案
1-12 ABCBB CCDBD BC ACD
13-14 化学 可再生 核聚变 电流表指示针偏转 左右 相反
15-16 放大 60 照相机 3 72 72
17-18 省力 20 25 0.36 97.2 3.6
19-20
21-22 甲 丙 B C 0刻度线 左 62 3.1 不变
23. 右 A 0.625 10 C 2 0.5
24
25.
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生物参考答案
1-6 DCCDAB
7 扦插 胚芽 蒸腾作用
8 肺泡 bdace 大脑皮层 ④⑤ 导管
9 器官 性状 传粉 受精 ④
10 遗传物质 孢子 丙 参与物质循环
11 设置对照组 相同 烟草浸出液的浓度 烟草浸出液能促进水蚤的心率
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化学参考答案
1-8 DABDBCAC
9 E 小于 加热煮沸
10 有
①锌粒与稀硫酸刚好完全反应
②完全反应后不再放热,温度降低,气压减小。
③H2So4、ZnSO4. C
11 四 B Na2CO3 C
12 a ③ 右 5
13 石墨烯 导电 B 失去 Li+ AD
15 不呈 分子 H+ CO2与水反应生产碳酸，使溶液中存在自由移动的H
+
湿润 浓盐酸 NH3 + HCl = NH4Cl
16 CO +H2O=H2+CO2 温室效应 温度为300°C ，压强为P1
MgH2 +2H2O=Mg(OH)2↓+2H2↑ 6
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