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证券投资基金在运作中实行制衡机制，即投资人拥有所有权，管理人管理和运作基金资产，托管人保管基金资产。( )
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背景资料 根据河流规划拟在A江建设一水利水电枢纽工程，该枢纽工程位于西南地区。工程以发电为主，同时兼有防洪、灌溉等任务。挡水建筑物为土石坝，水电站采用引水式开发方式。引水隧洞布置在右岸，在左岸设有开敞式溢洪道。该流域大部分为山地，山脉、盆地相互交错于其间，地形变化大。坝址地区河床覆盖层厚度平均20m，河床冲击层为卵砾石类土，但河床宽度不大。坝址两岸山坡陡峻，为坚硬的玄武岩。在坝址的上下游2km内有可供筑坝的土料190万m3作为防渗体用，另有1250万m3的砂砾料可用作坝壳料。由于本地区黏性土料天然含水量较高，同时考虑其他因素，土石坝设计方案选为斜墙坝。 [问题] 针对该土石坝施工，你认为如何做好料场规划
The Sahara The name Sahara derives from the Arabic word for "desert" or "steppe". At 3. 5 million square miles, an area roughly the size of the United States, the Sahara Desert in northern Africa is the largest desert in the world. It spans the continent from the Atlantic Ocean to the Red Sea. Daytime temperatures can reach as high as 130~F. The humidity sometimes gets into the teens. But it can also be as low as 2.5 percent, the lowest in the world. Most of the Sahara reeeives less than five inches of rain per year, while large areas sometimes have no rainfall at all for years. At the heart of the Sahara is the landlocked north African country of Niger. Here the sand dunes can be 100 feet tall and several miles long. Here sand plains stretch over an area larger than Germany where there is neither water nor towns. Yet sitting in the midst of the surrounding desert is the town of Bilma. Suddenly there are pools of clear water. Surprisingly, there are groves of date palms. Underground water resources, or oases, sufficient to support irrigated agriculture are found in dry stream beds and depressions. Irrigation ditches run off a creek to water fields. Corn, cassava, tea, peanuts, hot peppers, and orange, lime, and grapefruit trees grow in these fields. Donkeys and goats graze on green grass. The Sahara of Niger is still a region where you can see a camel caravan of 500 camels tied together in loose lines as long as a mile, traveling toward such oasis towns. There a caravan will collect life-sustaining salt, which is mined from watery basins, and transport it up to 400 miles back to settlements on the edges of the desert. The round trip across the vast sands takes one month. This passage is mostly about______
由于上市交易基金的市场价格等事项可能受到谣言、猜测和投机等因素的影响，为防止投资者误将这些因素视为重大信息，基金信息披露义务人还有义务发布公告对这些谣言或猜测进行澄清。( )
契约型基金的投资者既是基金持有人，又是公司的股东，可以参加股东大会，行使股东权利。( )
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