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【单选题】
以下哪一个不是拓扑结构的特点？A.
控制简单
B.
易扩充，易升级
C.
不易实现结构化布线
D.
中心结点负担较重
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反馈参考答案：
举一反三
【单选题】Dear Jack, How are you? I know you will come to my city to visit me next Sunday. Let me tell you the way to my house. When you walk out of the airport, go down Long Street. You will pass a bank on you...
A.
this Sunday
B.
this Monday
C.
next Sunday
D.
next Monday
【简答题】啤酒中常见的含硫化合物是（）、二氧化硫、（）。
【简答题】Zn + HNO 3 ( 稀 ) → Zn(NO 3 ) 2 + N 2 O↑+ H 2 O
【单选题】Dear Jack, How are you? I know you will come to my city to visit me next Sunday. Let me tell you the way to my house. When you walk out of the airport, go down Long Street. You will pass a bank on you...
A.
ride a bike
B.
walk
C.
take a bus
D.
fly
【单选题】将Cu、Zn混合物投入稀HNO 3 中，充分反应后，锌有剩余，则反应后的溶液中肯定不存在的是（ ） ①Cu ②Cu（NO 3 ） 2 ③HNO 3 ④Zn（NO 3 ） 2
A.
①和②
B.
②和③
C.
①和③
D.
②和④
【单选题】Dear Jack, How are you? I know you will come to my city to visit me next Sunday. Let me tell you the way to my house. When you walk out of the airport, go down Long Street. You will pass a bank on you...
A.
传递
B.
错过
C.
进入
D.
经过
【简答题】Zn + HNO 3 ( 稀 ) → Zn(NO 3 ) 2 + NH 4 NO 3 + H 2 O
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