初步调查是可行性分析的第一步。一般来说,初步调查的最佳方式为A.收集统计报表 B.发 发布时间:2018-07-15 03:01 │ 来源:www.tikuol.com 题型:单项选择题 问题: 初步调查是可行性分析的第一步。一般来说,初步调查的最佳方式为A.收集统计报表B.发调查表C.与企业高层座谈D.参加业务实践
题型:单项选择题 一个质量为2kg的物体同时受到两个力的作用,这两个力的大小分别为2N和6N,当这两个力的方向发生变化时,物体的加速度大小可能为[ ]A.1 m/s2B.2 m/s2C.3 m/s2 D.4 m/s2 查看答案
题型:单项选择题 阅读理解。 Diving At the Sydney Olympics in 2000 there were eight diving events for men and women. In these events, individual and synchronised competitors performed a set number of compulsory and voluntary dives, each of which was given a point score. Platform The platform is a non-bending board 10m high-the same height as a three-storey building. Springboard On the 3m springboard divers need agility (灵活) and timing. They use the flex of the board to attain maximum spring. Judges Seven judges give each dive a score out of ten A dive is judged on the approach, take-off, elevation, execution (完成) of movements and entry into the water. Scoring The highest and lowest scores are eliminated and the remaining five are totalled. The number is multiplied by the degree of difficulty rating assigned to each dive. This total is then multiplied by 0.6 to give the final score. Competition When there are more than 16 competitors, a preliminary competition is held. The eight divers with the most points qualify for the final. Types of Dives There are six different groups of dives. Forward, backward, reverse and inward dives involve rotating (旋转) in different directions relative to the board and the starting position. Twisting includes any dive with a twist. Armstand dives begin with a handstand position on the edge of the platform. Body Position Tuck-The body is bent at the waist and knees, the thighs are drawn to the chest while the heels are close to the buttocks (臀部). Pike-The legs are straight with the body bent at the waist. The arm position is dictated by the particular dive. Straight-No bending at the waist or knees is permitted. Free-The free position is only used in dives that include twists. Synchronised Diving Pairs of divers perform a combination of dives at the same time. Nine judges award points with four judges rating the execution of the dive and five judges assessing the synchronisation of the two divers. 1. When diving scores are totalled, what other information is taken into account? [ ]A. The difficulty of the dive. B. The body position of the diver. C. The time it took the competitor to execute the dive. D. The number of other people who have previously performed the dive. 2. When there are more than sixteen competitors in a diving competition, there must be _____.[ ]A. an equal number of male and female competitors B. another competition to choose the best eight divers C. two pairs of synchronised divers competing D. no more than five judges involved 3. The information states that the"free" body position is only used when a _____. [ ]A. diver's legs are perfectly straightB. twist is part of the dive being performed C. diver has reached the final of a competition D. reverse dive is being executed 4. According to the information presented, which of the following statements about armstand dives is TRUE? [ ]A. An armstand dive should be performed from a platform. B. An armstand dive should be performed from a springboard.C. Armstand dives are not usually performed at Olympic level. D. Armstand dives cannot be performed by synchronised divers. 5. The purpose of the information is to _____. [ ]A. indicate that the rules for diving changed for the 2000 OlympicsB. argue that diving is the most popular Olympic sport C. show that diving can be a dangerous sport D. give specific details' about the sport of diving 查看答案