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【多选题】
键联接按键在联接中的松紧状态分为紧键联接和联接两类。其中联接有( )。
A.
普通平键
B.
与花键
C.
半圆键
D.
楔键和切
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举一反三
【单选题】Sima, as described in this passage, is ______.
A.
the basic substance of Pangea
B.
like an ice floe
C.
the submerged mountain range
D.
igneous rock
【单选题】The story of Lian Po and Lin Xiangru happened in _____.
A.
Qing Dynasty
B.
period of Zhan
C.
Tang Dynasty
D.
Qin Dynasty
【简答题】8与4.5的积,减去7.5除以5的商,得多少?
【简答题】解方程 2(x+1.7)=9.2 3x-4×4.5=6.36 7x+2.5x=3.8 (3.8-2)x=14.4.
【判断题】各级人民政府和有关部门应当办好师范教育,并采取措施,鼓励优秀青年进入各级师范学校学习。非师范学校不承担培养和培训中小学教师的任务。
A.
正确
B.
错误
【单选题】Between 4.5 and 3.8 billion years ago, the earth became so ______ that it was not clear whether the shape would last or not.
A.
genuine
B.
slight
C.
solid
D.
violent
【简答题】根据38×45=1710,在括号里填上合适的数. 3.8×4.5=______ 38×0.45=______ 3.8×45=______ 0.38×450=______.
【简答题】解比例或方程。 (1)4.5x+3.8x=16.6 (2) :x= :
【简答题】6. Sima walks to school. Don rides his bike. Sima ____ his bike.
【简答题】非师范院校不应当承担培养和培训中小学教师的任务()
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