肝外伤手术控制出血时要在常温下阻断入肝血流，其安全时限在正常人为（） A.15分钟

The people below all want to go on a short trip and there are descriptions of six trips which a ferry company is offering.
1. Ray and three of his friends would like to spend a whole weekend driving around in nice scenery and enjoying some local food.          
2. Phil and Adam want to go on a comfortable trip which takes them quickly to an interesting city. Then they want to enjoy at least two days of sightseeing.           
3. Mike, Kathy and their three children don’t have much money, but they want a special day out this Saturday. They must be back home by 9 p.m.       
4. Kirsten is a Dutch student who is studying in Scotland. She doesn’t drive, but wants a day trip to see some beautiful scenery and spend a little time by the sea.            
5. Clare and Robert want to enjoy some good food, but would also like to give their two young children a day to remember. They don’t mind if they spend a lot of money.           

A Marine Life, France The chance to experience the oceans of the world. Children will love the observatory, with water all around them and big fish swimming above their heads! Afterwards you eat at a world-famous local restaurant before boarding the ferry at 9 p.m. Not cheap, but a great day out!	B Amsterdamer Sail out in the evening and enjoy over 12 hours in the Netherlands, returning the following night. After a good Dutch breakfast you travel by train direct to the heart of the wonderful city of Amsterdam. The sightseeing and places to shop will make this a day to remember. Weekends only.
C Ireland by Car Once you arrive in Ireland you’re quickly on beautiful country roads, with friendly villages where you can stop for a delicious bite to eat. The special price allows you to take your car and up to five people away for 48 hours, and two nights’ hotel accom- modation can be arranged for a little extra.	D French Hypermarket Day Trip Whether you want to buy or just look, you’ll love this tour. The large Darney shopping center is a shopper’s dream! You will find a great number of local goods on sale, and clothes and kitchen goods are excellent value. Free children’s entertainment all day. Leaves 10:00, back at 19:00.
E Belgium by Hydrofoil A four-day trip. From England you cross to Belgium in just 100 minutes by hydrofoil! You are served food and drinks during the crossing, then continue your journey to Brussels, or another beautiful city, on the fast Belgian railway network.	F Sea and Mountains in Northern Ireland Explore the Northern Ireland countryside, including the amazing Mountains of Mourne and the small seaside holiday town of Newcastle. They ferry leaves the port in Scotland at 7:30 and arrives back at 22:20. Transport in Northern Ireland is by air-conditioned coach.