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【判断题】
某电气元件两端交流电压的相位超前于流过它上面电流，则该元件为负载。
A.
正确
B.
错误
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【单选题】下列关于集线器的描述中,错误的是( )。
A.
集线器基于MAC地址完成数据帧转发
B.
连接到集线器的结点发送数据时采用 CSMA/CD算法
C.
通过在网络链路中串接一个集线器可以监听该链路中的数据包
D.
连接到一个集线器的所有结点共享一个冲突域
查看完整题目与答案
【单选题】听力原文：W: Hello! Can I speak to Tom? M: This is Tom speaking. Q: What are they doing? (21)
A.
They are working in the office.
B.
They are talking on the phone.
C.
They are playing in the school.
查看完整题目与答案
【单选题】马发生上颌窦炎和蓄脓的主要原因是(2011真题32)
A.
马腺疫
B.
马鼻疽
C.
牙齿疾病
D.
鼻腔炎症
E.
放线菌病
查看完整题目与答案
【单选题】下列关于集线器的描述中,错误的是( )。
A.
连接到集线器的节点发送数据时,所有节点都能收到
B.
连接到集线器的节点发送数据时,将执行CSMA/CD介质访问控制方法
C.
通过在网络链路中串接一个集线器可以监听该链路中的数据包
D.
集线器是基于MAC地址识别完成数据转发的
查看完整题目与答案
【单选题】马发生上颌窦炎和蓄脓的主要原因是
A.
马腺疫
B.
马鼻疽
C.
牙齿疾病
D.
鼻腔炎症
E.
放线菌病
查看完整题目与答案
【单选题】马发生上颌窦炎和蓄脓的主要原因是( )
A.
马腺疫
B.
马鼻疽
C.
牙齿疾病
D.
鼻腔炎症
E.
防线菌病
查看完整题目与答案
【单选题】听力原文：M: Hi, Sally. W: Hello, Tom. How are you? M: I'm fine. Where are you going? W: Oh, I'm on my way home from work. M: I didn't know you had a job. W: Yes, I work part-time at a supermarket. M: What...
A.
Working at the meat counter.
B.
Working in the produce section.
C.
Carrying groceries out of the store for customers.
D.
Checking the quality of the milk products.
查看完整题目与答案
【单选题】听力原文：M: Hi, Sally. W: Hello, Tom. How are you? M: I'm fine. Where are you going? W: Oh, I'm on my way home from work. M: I didn't know you had a job. W: Yeah, I work part-time at a supermarket. M: Wha...
A.
Working at the meat counter.
B.
Working in the produce section.
C.
Carrying groceries out of the store for customers.
D.
Checking the quality of the milk products.
查看完整题目与答案
【单选题】马发生上颌窦炎和蓄脓的主要原因是（）。
A.
马腺疫
B.
马鼻疽
C.
牙齿疾病
D.
鼻腔炎症
E.
放线菌病
查看完整题目与答案
【单选题】听力原文：M: Hi, Sally. W: Hello, Tom. How are you? M: I'm fine. Where are you going? W: Oh, I'm on my way home from work. M: I didn't know you had a job. W: Yeh, I work part-time at a supermarket. M: What...
A.
Working at the meat counter.
B.
Working in the produce section.
C.
Carrying groceries out of the store for customers.
D.
Checking the quality of the milk products.
查看完整题目与答案
相关题目：
【单选题】下列关于集线器的描述中,错误的是( )。
A.
集线器基于MAC地址完成数据帧转发
B.
连接到集线器的结点发送数据时采用 CSMA/CD算法
C.
通过在网络链路中串接一个集线器可以监听该链路中的数据包
D.
连接到一个集线器的所有结点共享一个冲突域
查看完整题目与答案
【单选题】听力原文：W: Hello! Can I speak to Tom? M: This is Tom speaking. Q: What are they doing? (21)
A.
They are working in the office.
B.
They are talking on the phone.
C.
They are playing in the school.
查看完整题目与答案
【单选题】马发生上颌窦炎和蓄脓的主要原因是(2011真题32)
A.
马腺疫
B.
马鼻疽
C.
牙齿疾病
D.
鼻腔炎症
E.
放线菌病
查看完整题目与答案
【单选题】下列关于集线器的描述中,错误的是( )。
A.
连接到集线器的节点发送数据时,所有节点都能收到
B.
连接到集线器的节点发送数据时,将执行CSMA/CD介质访问控制方法
C.
通过在网络链路中串接一个集线器可以监听该链路中的数据包
D.
集线器是基于MAC地址识别完成数据转发的
查看完整题目与答案
【单选题】马发生上颌窦炎和蓄脓的主要原因是
A.
马腺疫
B.
马鼻疽
C.
牙齿疾病
D.
鼻腔炎症
E.
放线菌病
查看完整题目与答案
【单选题】马发生上颌窦炎和蓄脓的主要原因是( )
A.
马腺疫
B.
马鼻疽
C.
牙齿疾病
D.
鼻腔炎症
E.
防线菌病
查看完整题目与答案
【单选题】听力原文：M: Hi, Sally. W: Hello, Tom. How are you? M: I'm fine. Where are you going? W: Oh, I'm on my way home from work. M: I didn't know you had a job. W: Yes, I work part-time at a supermarket. M: What...
A.
Working at the meat counter.
B.
Working in the produce section.
C.
Carrying groceries out of the store for customers.
D.
Checking the quality of the milk products.
查看完整题目与答案
【单选题】听力原文：M: Hi, Sally. W: Hello, Tom. How are you? M: I'm fine. Where are you going? W: Oh, I'm on my way home from work. M: I didn't know you had a job. W: Yeah, I work part-time at a supermarket. M: Wha...
A.
Working at the meat counter.
B.
Working in the produce section.
C.
Carrying groceries out of the store for customers.
D.
Checking the quality of the milk products.
查看完整题目与答案
【单选题】马发生上颌窦炎和蓄脓的主要原因是（）。
A.
马腺疫
B.
马鼻疽
C.
牙齿疾病
D.
鼻腔炎症
E.
放线菌病
查看完整题目与答案
【单选题】听力原文：M: Hi, Sally. W: Hello, Tom. How are you? M: I'm fine. Where are you going? W: Oh, I'm on my way home from work. M: I didn't know you had a job. W: Yeh, I work part-time at a supermarket. M: What...
A.
Working at the meat counter.
B.
Working in the produce section.
C.
Carrying groceries out of the store for customers.
D.
Checking the quality of the milk products.
查看完整题目与答案