正确答案: C
charge
题目:__________
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学习资料的答案和解析:
[单选题]在空间直角坐标系中,方程x2-4(y-1)2=0表示
两个平面
[单选题]Dreams are often an elegant means of highlighting problems________ in the present or the past.
faced
解析:动词的过去分词作定语后置。Problems faced=problems that are faced by someone。选项C是正确的。【句子大意】做梦经常会成为显示过去或现在所面临问题的很好方法。
[单选题]颈静脉切迹位于 ( )
胸骨