题型:填空题 实验室制硝基苯时,正确的操作顺序应该是( )A.先加入浓硫酸,再滴加苯,最后滴加浓硝酸B.先加入苯,再加浓硝酸,最后滴入浓硫酸C.先加入浓硝酸,再加入浓硫酸,最后滴入苯D.先加入浓硝酸,再加入苯,最后加入浓硫酸 查看答案
题型:填空题 阅读理解 Have you ever been to London? Here is some hotel information for you. Kingsway Hall Hotel We offer quality service (优质服务) in Kingsway Hall Hotel. This location puts guests in easy reach of many places, such as the British Museum and Piccadilly Circus. Our hotel also has modern Western food, and offers a perfect dining environment. The lounge bar is a comfortable place to enjoy a drink while watching the tourists. There are hundreds of dining choices within walking distance. Non-smoking rooms are ready for guests. Hilton Docklands Riverside Located on the bank of the Thames, our hotel is about two miles east of Tower Bridge and 36 miles from London Heathrow Airport. Our hotel has a beauty salon, a flower shop and a swimming pool. The hotel also offers laundry (洗衣店) services, babysitting, shining shoes, and local area transportation. Windermere Hotel Located in the center of London, our hotel puts guests within easy reach of London's well-known buildings. Buckingham Palace and the Royal Parks are just a short walk away. Within 1.5 miles you can visit Westminster Abbey and the Houses of Parliament. The theatres, Harrods shopping centre, and the designer shops of Sloane Square and Knightsbridge are all only a short walk away or a taxi ride away.1. What does Kingsway Hall Hotel provide for its guests?A. Chinese food.B. A lounge bar.C. Smoking rooms.D. A swimming pool.2. What is special about Hilton Docklands Riverside?A. It offers different kinds of service.B. It offers a reasonable price. C. It has convenient transport. D. It has delicious food.3. This passage is most likely to be found in ______.A. a travel guideB. a story bookC. a technical reportD. a geography magazine 查看答案
题型:填空题 太阳活动周期约为11年,一般是指()A.地球公转从近日点到远日点所需的时间B.太阳连续两次直射同一地点所间隔的时间C.相邻两次太阳活动极大年的平均间隔时间D.太阳黑子数由最多到最少的平均间隔时间 查看答案