题目内容

该项工程施工合同的补充协议中有哪些不妥之处？请指出并改正。

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请使用数据字典条目定义形式，给出第0层DFD中的“手工分户账”数据流和第1层DFD中的“初录分户账”、“复录分户账”的关系。

听力原文： It can get extremely noisy down here. The staff are supposed to wear ear protectors at all times but that's impossible if you need to talk to someone. The other things we have to contend with is dirt and dust. It's OK when we're not too busy but when there's a rush on there isn't time to clear up.
(16)

听力原文：M1: Good morning. Can I help you？
F1: Oh, yes. I want to rent an apartment. My name is Kate Murphy.
M1: Is it K-A-T-E, M-U-R-P-H-Y.
F1: Yes, that's right.
M1: Then what kind of apartment do you prefer？
F1: Well, I want to live near Sunny Street.
M1: Sunny Street, right. Anything else？
F1: The rent should not be more than 120 pounds a month, including water and gas. I'd like an air conditioner and heating system.
M1: How long are you going to rent it？
F1: About a year and a half, from February.
M1: Do you have the contact number？
F1: It's 55322788.
M1: OK! As soon as I find an apartment I will call you.
F1: Thank you. I'm looking forward to your answer.
？Look at the note below.
？You will hear a call to rent an apartment.
Hiring Registration
Date: 5th Jan.
Time: 10:30
Name of the customer: Kate (5)
Contact No: (6)
Service Details:
1 An apartment near (7) street, with air-conditioner and heating system.
2 Rent: net more than (8) a month, including water and gas.
3 Renting Period: about 1.5 years from February.

阅读以下说明，回答问题1至问题3。
[说明]
某公司规模扩大，既要考虑保证目前土建装修的效果不被破坏，又要满足网络扩容和企业工作实际需求，同时还要保证投资不要过大。经过深入分析和研究对比，决定采用无线局域网组网来解决网络扩容的问题，网络拓扑如图1-1所示。
从工作的频段、数据传输速率、优缺点以及它们之间的兼容性等方面，对IEEE 802.11a、IEEE802.11b和IEEE 802.11g进行比较。