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【单选题】
当一个平面机构的件数目小于此机构的自由度数时,此机构( )。A.
具有确定的相对运动
B.
只能做有限的相对运动
C.
运动不确定
D.
不能运动或损坏
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【简答题】I . 看图填空。 What’s in the room? 1 . There is a clock ______________ the wall near the window. 2 . There is a window ______________ the clock and the shelves. 3 . There are three pictures ______________ ...
【简答题】Fill in the blanks with is or are. 1.There _____ a clock on the table. 2. ____ there a map on the wall? Yes, there ______. 3. There _____ some students in the classroom. 4. There _____ a pencil, a boo...
【简答题】( )1.________ a new table in the kitchen. A.There is B.There are C.Is it ( )2.Let's count ____ten____twenty. A. from,to B.from,and C.in,to ( )3. There_______any juice in the cu...
【简答题】涨跌停板制度下量价关系分析有哪些?
【简答题】选出画线部分读音不同于其他项的单词。 ( ) 1. A. t a ble ( ) 2. A. l e ft ( ) 3. A. happ y ( ) 4. A. th ere ( ) 5. A. g i ve B. st a mp B. l e tter B. fl y B. th ey B. n i ce C. n a me C. e -mail C. s...
【简答题】看图,填空 1 .There is a clock ______________ the wall near the window. 2.There is a window ______________ the clock and the shelves. 3.There are three pictures ______________ the wall near the door. 4.The...
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【简答题】( )1.________ a ball in my box. A.There is B.There are C.Is it ( )2.—What's the _______? —Five o'clock. A.number B.name C.time (...
【简答题】Fill in the blanks with is or are. 请用is 或 are 填空。 1.There _____ a clock on the table. 2. ____ there a map on the wall? Yes, there ______. 3. There _____ some students in the classroom. 4. There _____ ...
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