题干

阅读理解

    Tibetan people are friendly and easy to get along with. However, Tibetans have different ways of behavior in many aspects due to their unique culture and religion. Be sure to respect local customs and be polite.

    Don't enter a monastery without permission. Don't smoke in monasteries. Don't touch Buddha statues, religious objects or prayer flags. Walk around monasteries (寺院), temples, dagobas, Mongolian cairns (Mani piles) and other religious structures in clockwise order with the exception of the Bon sites.

    Don t step on the threshold when entering a tent, house, or monastery. Don't touch the head of a Tibetan. The head is considered as a sacred part of the body. Remember to cross your legs when you are asked to have a seat. Don't stretch your legs with feet pointing to others.

    Don't drive away or hurt eagles. Eagles are considered holy birds in the hearts of Tibetan people. Don't disturb or injure cows or sheep with red, green or yellow ribbons because they are Tibetan sacrifice to worship gods.

    Don't take photos without permission. You'd better ask for permission before taking pictures of Tibetan people. Most Tibetan monasteries are not allowed to take pictures or you need to pay.

    Tibetan people are getting more used to habits of foreigners and being more tolerant due to rapidly developing tourism in Tibet. However, we still hope you can show respect to Tibetan traditions and behave well since their unique lifestyle is part of the charm of Tibet.

上一题 下一题 0.0难度 选择题 更新时间:2018-10-22 10:42:26

答案(点此获取答案解析)

同类题1

阅读下面的短文,回答问题.

太阳能汽车利用太阳能来驱动,真正实现了零排放.有效地减小了对环境的污染.某太阳能汽车,其前风窗玻璃和顶盖玻璃皆采用防太阳辐射的层压玻璃制作而成,车身轻便灵活.电池完全由太阳能供能﹣通过安装在车顶和前端的电池板收集太阳能.车上太阳能电池板的有效面积为10m2,它正对太阳时电池能够产生100V的电压,并对车上电动机提供20A的电流,电动机最大可获得1600W的机械功率.太阳光照射到地面上1平方米面积上的辐射功率1.0×103W.该车加速性能优越,从静止开始加速100m的路程最短仅需5s.

(1)车窗玻璃能有效防止来自太阳的辐射,主要是能阻挡太阳光中的____ ;太阳能属于____ (选填“可再生”或“不可再生”)能源.

(2)该太阳能汽车在设计时充分利用了流体力学的知识.如图甲所示,当汽车行驶时,流过它上方的空气速度比下方空气速度大,此时,上方空气压强比下方空气压强____ (选填“大”或“小”);该太阳能汽车从静止加速100m路程的过程中可以达到的最大平均速度为____ m/s.

(3)该太阳能汽车电池的输出功率为____ W,将太阳能转化为电能的效率为____ 

(4)若该汽车在水平路面上以最大机械功率P运动,一段时间后再将功率减小到P1,并保持此功率运动,其运动的速度时间图线如图乙所示,设运动过程中小车所受阻力恒定不变;则该车运动时所受阻力为____ N,功率P1=____ W.

(5)该太阳能汽车采用四轮鼓式制动,有效地减小了制动距离.通过测量获得汽车以不同速度行驶时对应的制动距离(即从操纵制动刹车到车停下来的距离),数据如下表所示:

实验次数

1

2

3

4

5

速度/(m•s﹣1

2

3

4

5

6

制动距离/m

0.53

1.20

2.13

3.33

4.80

请在图丙中描点作出s﹣v2图象.根据图象反映的规律可知,当轿车速度为4.5m/s时对应的制动距离是____ m.