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学前儿童科学教育环境包括物理学习环境，也包括（）。

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在渗流系数小于0.1m/d的粘土或淤泥中降低地下水位时，比较有效的方法是电渗井排水。

A. 正确
B. 错误

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省、自治区、直辖市人民政府水行政主管部门不是本行政区域内地方水利工程建设项目招标投标活动的行政监督与管理部门。

A. 正确
B. 错误

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油田注水以后，为了控制水线，调整层间矛盾，可以用（）为背景，画出水线推进图。

A. 水淹图
B. 油水井连通图
C. 开采现状图
D. 油砂体平面图

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A customer plans to consolidate several systems onto POWER7. Their immediate requirement is to have a single Power 770, and they will buy a second Power 770 at a later stage. They want to keep their existing three POWER5 570s and three POWER6 520s which are all managed by an HMC (7310-CR3). Which of these statements is true and would minimize the cost?（）

All the machines can be connected to the existing HMC, as long as it is updated to code level 7.7.1 or later
B. The Power 770 requires an HMC (7042-CR5 or later), so they must buy one. All of the systems can be managed by this new HMC
C. They should buy a new HMC for the Power 770 system, and leave the POWER5 and POWER6 based systems connected to the existing one
D. The Power 770 requires an HMC, so they should connect the Power 770 to the HMC and convert the POWER5 and POWER6 based servers to IVM

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