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In the xy-plane above, is angle QPR a right angle?

  1. Line segment PQ is perpendicular to the x-axis.
  2. Line segment PR is perpendicular to the y-axis.
  • AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
  • BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
  • CBOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
  • DEACH statement ALONE is sufficient.
  • EStatements (1) and (2) TOGETHER are not sufficient.
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正确答案: C

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