代人提问!高中数学必修五的解三角形问题会的来,在三角形ABC中,角B=30度,AB=2倍更号3,面积

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• 1:三角形ABC,b=12,C=30度,A=120度.求a,
  :三角形ABC,b=12,C=30度,A=120度.求a,
  
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• 2Which of the following sentences is an emphatic sentence（强调句)？A．What he means, in other

  Which of the following sentences is an emphatic sentence(强调句)？

  A．What he means, in other words, his intentions is more annoying than his words.

  B．His intentions instead of his words have annoyed me.

  C．I was annoyed by his intentions rather than what he means.

  D．It is what he means rather than what he says that annoys me.

  请帮忙给出正确答案和分析，谢谢！

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• 3传染性强的指标（俗称大三阳）是A.AB.BC.CD.DE.E

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  A.A

  B.B

  C.C

  D.D

  E.E

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• 4解三角形,
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• 5解三角形 7题
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• 6顶棚有直接式和悬吊式两种，其中悬吊式称为吊顶。（)

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• 7二中积分.高数.求计算过程,
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• 8How many people are unemployed in America according to OECD？A．3.6 million.B．13 million.C．3

  How many people are unemployed in America according to OECD？

  A．3.6 million.

  B．13 million.

  C．34 million.

  D．44 million.

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• 9x的平方sinx的积分详细步骤
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• 10When shopping online, make sure______.A．you have installed the secured browser in the comp

  When shopping online, make sure______.

  A．you have installed the secured browser in the computer

  B．you can see the secure lock displayed by your browser

  C．you are alone when making the online purchase

  D．you have entered the correct credit card number

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