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【单选题】
以列关于DDoS和DoS的描述不正确的是()
A.
DDoS又被称为“洪水式攻击”
B.
DDoS攻击策略侧重于通过很多“僵尸主机”向受害主机发送大量看似合法的网络包DoS则侧重于通过对主机系统特定漏洞的利用进行攻击造成拒绝服务。
C.
DoS是拒绝服务攻击的缩写,DDoS的分布式拒绝服务攻击的缩写
D.
TearDrop、ACKFlood及SYN Flood是常见的DoS攻击手段。
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参考答案：
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【单选题】听力原文：T: Good morning. Can I help you sir? M: Yes, good morning. Er, my name is Adams. I am going to a conference in Sydney in July. T: Yes. How long for? M: I expect to be there for about three weeks....
A.
More expensive than the usual price.
B.
Only one stopover allowed.
C.
Having only one Australian stop.
D.
Many restrictions on it.
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【单选题】听力原文：W: Good morning. China Hotel Reception. Can I help you? M: Good morning. My name is Tom Smith. I'd like to book a double room without bath for three days. Q: What kind of room does Tom Smith want...
A.
A double room with bath.
B.
A double room without bath.
C.
A single room without bath.
D.
A single room with bath.
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【单选题】听力原文：M: Parcel Express. Good morning. How can I help you? W: Good morning. I'm thinking of sending a parcel to New York next week. Can you tell me what the procedure is, please? M: Certainly. When you...
A.
name
B.
address
C.
receipt
D.
phone number
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【单选题】听力原文：W: Good morning. British Airways, what can I do for you? M: Good morning. I have a return ticket to Paris. It's open. I'd like to confirm my flight. W: What date do you want to travel? M: 23rd De...
A.
To London.
B.
To New York.
C.
To Paris.
D.
To Berlin
查看完整题目与答案
【单选题】听力原文：M: Good morning. Can I help you? W: Good Morning. We'd like to book a holiday for July, please. M: Certainly. Where did you have in mind? W: Oh, well, we haven't thought a lot about it, really. W...
A.
Because she will have the hottest weather then.
B.
Because neither she nor her husband work then.
C.
Because Portugal is the most beautiful then.
D.
Because it is less expensive to travel then.
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【简答题】兴奋收缩耦联
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【单选题】20160144常用的统计图表有:柱形图、条形图、折线图、饼图等。下图所示的统计图表类型为 (44) 。
A.
饼图
B.
条形图
C.
柱形图
D.
折线图
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【单选题】20160144常用的统计表有:柱形图、条形图、折线图、饼图等。下图所示的统计图表类型为 (44) 。
A.
饼图
B.
条形图
C.
柱形图
D.
折线图
查看完整题目与答案
【多选题】关于心肌兴奋收缩耦联，正确的是
A.
兴奋收缩耦联关键离子是钠离子
B.
横管膜上存在钙离子通道
C.
二联管结构发挥重要作用
D.
需要钙离子内流触发钙库释放钙离子
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【单选题】Shop assistant: Good morning. Can I help you? Customer: __________I' m just looking round.
A.
No, you can't.
B.
Not at the moment thanks.
C.
Yes, please.
D.
Yes, thank you.
查看完整题目与答案
相关题目：
【单选题】听力原文：T: Good morning. Can I help you sir? M: Yes, good morning. Er, my name is Adams. I am going to a conference in Sydney in July. T: Yes. How long for? M: I expect to be there for about three weeks....
A.
More expensive than the usual price.
B.
Only one stopover allowed.
C.
Having only one Australian stop.
D.
Many restrictions on it.
查看完整题目与答案
【单选题】听力原文：W: Good morning. China Hotel Reception. Can I help you? M: Good morning. My name is Tom Smith. I'd like to book a double room without bath for three days. Q: What kind of room does Tom Smith want...
A.
A double room with bath.
B.
A double room without bath.
C.
A single room without bath.
D.
A single room with bath.
查看完整题目与答案
【单选题】听力原文：M: Parcel Express. Good morning. How can I help you? W: Good morning. I'm thinking of sending a parcel to New York next week. Can you tell me what the procedure is, please? M: Certainly. When you...
A.
name
B.
address
C.
receipt
D.
phone number
查看完整题目与答案
【单选题】听力原文：W: Good morning. British Airways, what can I do for you? M: Good morning. I have a return ticket to Paris. It's open. I'd like to confirm my flight. W: What date do you want to travel? M: 23rd De...
A.
To London.
B.
To New York.
C.
To Paris.
D.
To Berlin
查看完整题目与答案
【单选题】听力原文：M: Good morning. Can I help you? W: Good Morning. We'd like to book a holiday for July, please. M: Certainly. Where did you have in mind? W: Oh, well, we haven't thought a lot about it, really. W...
A.
Because she will have the hottest weather then.
B.
Because neither she nor her husband work then.
C.
Because Portugal is the most beautiful then.
D.
Because it is less expensive to travel then.
查看完整题目与答案
【简答题】兴奋收缩耦联
查看完整题目与答案
【单选题】20160144常用的统计图表有:柱形图、条形图、折线图、饼图等。下图所示的统计图表类型为 (44) 。
A.
饼图
B.
条形图
C.
柱形图
D.
折线图
查看完整题目与答案
【单选题】20160144常用的统计表有:柱形图、条形图、折线图、饼图等。下图所示的统计图表类型为 (44) 。
A.
饼图
B.
条形图
C.
柱形图
D.
折线图
查看完整题目与答案
【多选题】关于心肌兴奋收缩耦联，正确的是
A.
兴奋收缩耦联关键离子是钠离子
B.
横管膜上存在钙离子通道
C.
二联管结构发挥重要作用
D.
需要钙离子内流触发钙库释放钙离子
查看完整题目与答案
【单选题】Shop assistant: Good morning. Can I help you? Customer: __________I' m just looking round.
A.
No, you can't.
B.
Not at the moment thanks.
C.
Yes, please.
D.
Yes, thank you.
查看完整题目与答案
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