Tidal streams and currents are described by the direction ____ . A. from which they blow B. toward which they blow C. from which they flow D. toward（去向） which they flow（流）

单选题

Tidal streams and currents are described by the direction ____ .A. from which they blow B. toward which they blowC. from which they flow D. toward（去向） which they flow（流）

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单选题

Data relating to the direction and velocity of rotaiy tidal currents can be found in the ___ .A. Mariner‘s GuideB. Tidal Current TablesC. Nautical Almanac D. Tide Tables

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单选题

For decades，farmers and environmentalists in California have been entangled in a______over laws that limit the amount of water diverted from rivers and streams for irrigation。

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