皮皮学,免费搜题
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【简答题】
阅读理解。 Guitar Lessons for Guitar Players Playing the same things over and over again when you pick up the guitar? Teaching yourself for years but you hit a wall? Don't know what to do next? Whether you're a total beginner, or an old guitar player, we'll get you working on something you can benefit from. I'm a professional teacher, over 30 students at my studio in downtown Berkeley and several music schools in San Francisco, Alameda, and Mountain View. No matter what style you're into, I guarantee there are songs by your favorite bands that you could learn. Call at 510-333-9091 or e-mail at bluescho0147@gmail.com Dance Classes for Students 2 5 Through Adult In Motion Dance Center in Martinez is now accepting registration (注册) for all fall dance classes. There are classes offered in Jazz, Tap, Ballet, Hip -Hop, Contemporary and Cheerleading. Classes run like the school year Sept through June. Prices are very reasonable at only $45 a month. That's for a one-hour class once a week for a month. This studio is known for their younger child program. We are always looking for talented instructors too. If you want more information call Deena at 925-229-5678. Qi Gong with Angie Qi Gong is the perfect activity for anyone, at any age. It combines gentle movement and meditation (冥想), breathing regulation and relaxation. The exercises are designed to reduce stress and anxiety and improve blood and energy circulation (循环) throughout the body, therefore increasing immune (免疫的) function, improving energy levels and sleep. Thousands of Qi Gong lovers around the world have experienced the extraordinary benefits of this gentle, ancient Chinese exercise form and are healthier and happier for it. Join us to experience the benefits for yourself! WHEN: Tuesdays from noon ~ 1pm WHERE: Halanda Studio 1062 Lincoln Avenue, San Jose, CA 95125 COST: $12 per class drop-in (即到即学的) or $45 for a pre-paid set of 4 classes CONTACT: Angie at angie@lokahiacupuncture.com , 408-887-6000 1. The purpose of the first advertisement is to ________. A. build a bridge between guitar players B. look for teachers for several music schools C. attract guitar players to attend music classes D. help guitar beginners to improve their techniques 2. Who will probably contact 510-333-9091? A. A music lover. B. A Hip-Hop lover. C. A dance lover D. A Qi Gong lover. 3. Sarah and Jessey decide to attend the dance classes for six months. They each will have to pay ___. A. $135 B. $270 C. $540. D. $1,080 4. How much can you save if you pay for eight classes at one time before you join Halanda Studio? A. $3. B. $6. C. $8. D. $12.
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【单选题】如图所示,用水平力F拉着重为100N的物体,在水平地面上向左匀速移动了5m,物体所受地面的摩擦力大小为20N,则(  )
A.
重力做的功是500J
B.
拉力大小为100N
C.
拉力大小为120N
D.
拉力做的功为100J
【单选题】工人师傅用如图所示的滑轮组提升重物,在大小为500N的拉力 F 作用下,10s内将800N的重物匀速提升了2m,此过程中
A.
有用功是1000J
B.
总功是1600J
C.
滑轮组的机械效率是80%
D.
拉力做功的功率是100W
【单选题】如图所示,在大小为 500 N 的拉力 F 作用下,滑轮组将 800 N 的重物提升了 1 m 。在此过程中 : ( )
A.
做的有用功是 500 J ;
B.
做的总功是 800 J;
C.
滑轮组的机械效率是 62 . 5 % ;
D.
滑轮组的机械效率是 80%.
【简答题】诊断核医学包括___________________和___________________。
【单选题】如图所示,在大小为500N的拉力F作用下,滑轮组将800N的重物提升了lm.在此过程中(  )
A.
做的有用功是500J
B.
做的总功是800J
C.
滑轮组的机械效率是62.5%
D.
滑轮组的机械效率是80%
【多选题】诊断核医学不包括()
A.
体内诊断
B.
体外分析
C.
内照射
D.
外照射
E.
深部X线
【单选题】西洋参入汤剂宜:
A.
先煎
B.
后下
C.
包煎
D.
另煎
【单选题】如图所示,用水平力 F拉着重为100N的物体,在水平地面上向左匀速移动了5m,物体所受地面的摩擦力大小为20N,
A.
重力做的功是 500J
B.
拉力大小为 100N
C.
拉力大小为 120N
D.
拉力做的功为 100J
【单选题】如图所示,用与水平方向成一定夹角,大小为F=100N的力,拉着重500N的小车在水平方向前进了100m,则拉力F对小车做功(  )
A.
等于10000J
B.
等于50000J
C.
没有做功
D.
F做了功,但条件不足,无法计算
【简答题】用如图所示的滑轮组将重为500N的物体,在2s内匀速提升6m,已知拉力F的大小为200N,求 (1)滑轮组提升重物时所做的有用功。 (2)滑轮组的机械效率。
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