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【简答题】
铰所用的刀具是 [填空(1)] ，铰可达到的尺寸公差等级为 [填空(2)] ；表面粗糙度Ｒa值为 [填空(3)] μm。 A. B. C.
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举一反三
【简答题】根据短文判断正 （T）误 （F）。 This is my family. My grandfather is Peter Smith.My grandmother's first name is Linda. My father is Frank. And my mother is Lucy. My uncle and aunt are nice people. Their son is Sam...
【单选题】My grandmother is very old, and she can't see clearly without __________.
A.
glasses
B.
words
C.
gesture
D.
glass
【简答题】“Everything happens for the best,” my grandmother said whenever things weren’t going my way. “Don’t worry, one day your luck (1) _____________(change). ” Grandmother was right, as I discovered after g...
【单选题】---- I will go to the countryside to see my grandmother this afternoon, so I can't go swimming with you . ------ ______ . [ ]
A.
It' s my pleasure .
B.
You are welcome .
C.
That 's a pity.
D.
Sure , I am..
【简答题】当前计算机的应用领域极为广泛,但其应用最早的领域是
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