题目内容

一圆断面风道，直径为300mm，输送20℃空气的密度β=1.2kg/m3，动力黏滞系数μ=0.0183×10-3Pa.s，则保持层流状态的最大流量为()。

A. 8.6×10-5m3/s
B. 7.2×10-5m3/s
C. 8.6×10-6m3/s
D. 7.2×10-6m3/s

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听力原文：M: Hello, Michelle. It is Tony Stevens here. How are things getting along？
W: Not too bad. The meeting will be at 2 p.m. on the 16th in the Rose Hotel in Manchester. We still have six days.
When did this conversation most probably take place？

A. On the 8th.
B. On the 10th.
C. On the 6th.
D. On the 11th.

What does the room rate include？

A. Tax and breakfast.
B. Tax and service charge.
C. Service charge and breakfast.
D. Tax.

Part B
Directions: You will hear four dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C or D. After listening, you will have 10 seconds to check your answer to each question. You will hear each piece ONLY ONCE.
听力原文： The Amsterdam American Hotel is located at the heart of Amsterdam, in the middle of the famous Leidseplein Square, full of restaurants, bars and theatres. It was built in 1900. It has 6 floors with 175 non-smoking guestrooms. Many of the rooms overlook the Leidseplein Square.
This hotel has a very good location, in the center of Amsterdam, close to shopping streets and museums such as Van Gogh Museum and the beautiful Vondel Park.
The room rate (that is the price of one room for one day) includes tax and service charge. A booking of 9 rooms or more is considered a group reservation and can enjoy a lower price and a different cancellation policy. Breakfast is charged at ＄19 per person per day.
Check-in time is at 3 p.m. If you may arrive earlier, you'd better reserve the room for the night before. Check-out time is at 12 noon. Hotel kindly requests you to take this time into consideration. If you would like to stay longer and check out later than 12 noon, there will be a charge at ＄ 35 per room per hour, until 3 p.m. After 3 p.m. another day's room rate will be charged.
What do we know about the Amsterdam American Hotel according to the talk？

A. It's near the Leidseplein Square.
B. It has altogether 175 guestrooms.
C. It was built in the 19th century.
D. Its location is very good.

听力原文：W: Did you visit Henry last Sunday？
M: Well, I intended to, but I caught a Cold, so I went to the hospital instead.
What did the man do last Sunday？

A. He called up Henry.
B. He stayed at home.
C. He visited Henry.
D. He went to see a doctor.