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Science

共有 8553 道题

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Energy Science 共题

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单选题

According to the US Energy Information Administration, in cents per kilowatt-hour, which of the foll...

Normal MiddleSchool

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问答题

What two planets in our solar system do not have natural satellites?

Normal MiddleSchool

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问答题

Today's nuclear power reactors convert about 4 percent of the potential energy in their fuel to...

Normal MiddleSchool

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问答题

Mirrors are molded into what shape to capture and concentrate solar energy in trough-type solar ther...

Normal MiddleSchool

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单选题

To maximize solar energy absorption in the northern hemisphere, the front of a building constructed...

Normal MiddleSchool

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单选题

Which of the following is closest to the percentage of the energy used in the United States that com...

Normal MiddleSchool

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单选题

What is the largest known natural satellite in the solar system?

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单选题

Which technology is the largest source of carbon-free renewable electricity in the United States?

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单选题

Coal is primarily used to generate electricity. Which of the following is the second largest use of...

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单选题

Government agencies and utilities offer various incentives to encourage people to improve the energy...

Normal MiddleSchool

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