Which of the following is true? A. Machines make work harder. B. A simple machine has many moving parts. C. Machines make work easier. D. There are three main types of simple machines. 相关知识点: 试题来源: 解析 C 反馈 收藏
Which simple machine is a ramp? A. Inclined plane B. Lever C. Pulley D. Wheel and axle 相关知识点: 试题来源: 解析 A。B 选项杠杆是一种可以省力的机械;C 选项滑轮是由轮和绳索组成的简单机械;D 选项轮轴由轮和轴组成。而 ramp 就是斜面,是一种倾斜的平面,可以省力地将物体抬升到一定高度。
9. —Do you know ___ the Dragon Boat Festival is this year? —Sorry, I don’t know the exact date. A. how B. why C. when 10 A great number of beautiful flowers ___ on the second ring road in Chengdu these days. A. ...
C)Lack of a successful business model of their own。 D)Failure to integrate innovation into their business。 6。 A)It is the secret to business success。 B)It is the creation of something new。 C)It is a magic tool to bring big rewards。 D)It is an essential part of business culture。
第五段中提到“The ultimate goal is a foolproof technology for deception detection:a brain signature of lying,something as visible and unambiguous as Pinocchio’s nose.”可见“匹诺曹的鼻子”只是借喻,并非科学家的真正目标,原文指的是要找到像匹诺曹的鼻子一样可以一下判断出某人是否在撒谎的标记,用于测谎...
1. The best word to describe people's attitudes towards the opening of the new museum is ___. A) welcome B) against C) indifferent D) controversial 2. The museum is located ___. A) in an art center B) in a business district C)...
seems to trigger a migraine headache, and some note that exposure to bright and flickering lights can be followed by a migraine. It would seem that a person with a tendency to get migraines should try to find out which of these situations is associated with the onset of the headache and ...
Some discussion of this is warranted In addition, developing a meaningful machine-learning approach requires substantially more time and computational effort. Accordingly, such approach has a high level of complexity. Hence, the dilemma: which SET should be used in these different situations? The ...
根据第二段The "Great Resignation",in which millions around the world have quit their jobs,may in part be a consequence of lockdowns creating new opportunities for home working.These so-called lifestyle choices about which jobs to do,together with creaking (岌岌可危的) supply cha...
百度试题 结果1 题目单句填空。We are all in favor of the introduction of the machine, which will(simple) our work. 相关知识点: 试题来源: 解析 xy:IduI:s 反馈 收藏