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【单选题】
作用于刚体上的力可以( )作用线移到刚体上的任意一点。A.
平行于
B.
沿着原
C.
垂直
D.
沿着60°
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举一反三
【简答题】There are some photos of my family . There are four people in my family . Look at the photo ! My father is reading a book. My mother is cleaning the floor . My sister and I are doing our homework ...
【单选题】This is __________. [ ]
A.
a picture of my family
B.
my family's picture
C.
a picture of I family
【单选题】My family ________ a big family. My family ________ all here. [ ]
A.
is; is
B.
are; are
C.
is; are
D.
are; is
【单选题】Here _______a photo of my family. My family _______ in it.
A.
are, are
B.
is, are
C.
are, is
D.
is, is
【简答题】Hello, my name is Ann. This is a photo of my family. There are four people in my family. These are my parents. The woman in the photo is my mother, Mary. She is a teacher. She can play table tennis. A...
【简答题】I have a big family. In my family,there are 6 people—my father,my mother,my two sisters,my brother and me. My mother is Linda. My father is Mike. And our family name is Hand. My sisters are Gina and S...
【简答题】光气主要用于生产聚氨酯的基本原料()(包括TDI、MDI及PMPPI)和()。
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