对金属基底冠的要求不恰当的是A．有足够的固位力B．非贵金属冠厚度不低于0.3mmC． 发布时间：2017-12-29 09:51 │ 来源：www.tikuol.com 题型：单项选择题 问题： 对金属基底冠的要求不恰当的是A．有足够的固位力B．非贵金属冠厚度不低于0.3mmC．厚薄一定要均匀一致D．各轴面呈流线型，表面无锐边、锐角E．颈缘处连续光滑
题型：单项选择题 阅读理解。 Many young people want to be pop stars. Pop stars are rich. Many people think they are leading a happy and easy life. In fact, they have very hard lives. They spend much of their time on travel. Sometimes the travel is interesting, but in most time it is boring to pop stars. The following chart is a day's life of a pop star. Feb. 10, 2007 5:00 Woke up and had breakfast in the hotel, packed bags. Took taxi to airport. 7:30 Plane took off half an hour later than usual for the bad weather. 8:30 Plane landed. Waited for luggage for half an hour. Signed for fans at the airport. 9:45 Arrived at the hotel and had a short rest. 10:00 Started out to attend the meeting with fans and gave an interview to the local reporters. 11:00 Went to radio station to attend the live show. 12:00 Had lunch with local producer. 13:00 Went to theatre and prepared for the night's show. The lighting of the theatre was good, but the band did poorly. 17:00 Back to hotel. Tried to have a rest. Still worried about the band. 18:00 Had supper, but eat little. 18:30 Went to theatre again and got ready for show. 19:00 Sang very well, and audience gave a warm welcome. The band improved a little. 22:00 Show was over. Very tired from it. 23:00 Back to hotel. Took a bath. Too excited to sleep, so watched TV 0:00 Fell asleep, with TV on. 1. According to the chart, the pop star was a ________. [ ]A. singer B. dancer C. player D. pianist. 2. According to his plan, his plane should have taken off at _______. [ ]A. 6:30 B. 7:00 C. 7:30 D. 8:00 3. How long did he spend on his way to the place for his performance? [ ]A. One hour. B. Two hours. C. four hours and three quarters. D. One hour and a quarter. 4. At the radio station, the pop star ________. [ ]A. showed fans how to become famous B. gave a performance on the air C. met fans and signed for them D. told people how he lived his life 5. From this passage we get to know that ________. [ ]A. not all people like pop stars B. pop stars have their own bands C. fans are troublesome for pop stars D. to be a pop star is not all fun 查看答案
题型：单项选择题 我国于2002年5月1日正式实施了—《职业病防治法》，并确定每年（）月的最后一周为全国职业病防治法宣传周。今年宣传周的主题是：“保护农民工健康是全社会的共同责任”。A.3B.4C.5D.6 查看答案