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【简答题】
听音，选出你听到的句子。 ( ) 1. A. Jenny is wearing a red blouse. ( ) 2. A. Where is the book? ( ) 3. A. Where are you from? ( ) 4. A. Her name is Lily. ( ) 5. A. Jenny is seven years old. B. Kim is wearing a red skirt. B. Where is the pen? B. What's your name? B. My name is Jenny. B. Danny is eight years old.
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举一反三
【单选题】( )describes how to interact with the information system to accomplish specific tasks.
A.
System specification
B.
Program
C.
User guide
D.
System document
【单选题】导入的原理图文件放在 PCB 文件的 ( ) 工作层面进行元件布局。
A.
Top Layer
B.
Bottom Layer
C.
Mechanical 1
D.
Keep—Out Layer
【单选题】describes how to interact with the information system to accomplish specific tasks.
A.
System specification
B.
Program specification
C.
User guide
D.
System document
【简答题】如果类B是从类A继承而来的,则类A叫做类B的______,类B叫做类A的______。
【简答题】LED1不亮测试电阻R1两端电压()?
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