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【单选题】
NPN型晶体管工作在放大状态，要求 （ ） .A.
发射结正偏，集电结反偏
B.
发射结正偏，集电结正偏
C.
发射结反偏，集电结正偏
D.
发射结反偏，集电结反偏
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举一反三
【简答题】瑞士心埋学家皮亚杰依据幼儿的认知发展水平将其游戏划分为感觉运动游戏、象征性游戏、结构游戏和( )游戏。
【单选题】从学前儿童认知发展的角度可以将游戏划分为( )
A.
创造性游戏、合作性游戏
B.
有规则游戏、无规则游戏、有合作游戏、无合作游戏
C.
感知运算游戏、象征性游戏、结构性游戏、有规则游戏
D.
感觉运动游戏、象征性游戏、结构性游戏、规则性游戏
【单选题】The children were (surprised) when the teacher (had) them (to) close their books (unexpectedly).
A.
surprised
B.
had
C.
to
D.
unexpectedly
【单选题】将游戏划分为感觉运动游戏、象征性游戏、结构性游戏和规则游戏，其划分的依据是（）
A.
按儿童在游戏中的体验形式分类
B.
按游戏的教育作用分类
C.
按儿童认知发展分类
D.
按儿童在游戏中的社会行为表现分类
【简答题】薪酬制度目标反映了企业管理的目标,可以从哪两个方面考虑?请结合自己的理解,谈谈你的看法。
【单选题】The children were (surprised) when the teacher (had them) (to close) their books (unexpectedly).
A.
surprised
B.
had them
C.
to close
D.
unexpectedly
【单选题】---Look at the rainbow! What a view! ---_______.
A.
Yes. What beautiful it is
B.
Yes. How beautiful it is
C.
Yes. What a beautiful it is
D.
Yes. How a beautiful it is
【单选题】--What a beautiful picture!--It's years _______ a picture as beautiful as this one.
A.
that I have painted
B.
since I have painted
C.
since I painted
D.
when I painted
【单选题】_________ we were watching TV, they were reading books. [ ]
A.
When
B.
After
C.
While
D.
Before
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