问题
不定项选择
汽车在平直路面上启动后以额定功率行驶(设所受的阻力大小不变)，下列说法中正确的是[ ]
A．在速率没达到最大以前，加速度是不断增大的
B．在速率没达到最大以前，牵引力是不断减小的
C．汽车做匀加速直线运动
D．速率越来越大，是因为牵引力越来越大
答案
B
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汽车在平直路面上启动后以额定功率行驶(设所受的阻力大小不变)，下列说法中正确的是[ ]
A．在速率没达到最大以前，加速度是不断增大的
B．在速率没达到最大以前，牵引力是不断减小的
C．汽车做匀加速直线运动
D．速率越来越大，是因为牵引力越来越大
B
| 阅读理解。 | ||||
| Welcome to the Blue Moon Beachland! Check out the COOL things you can enjoy here in the HEAT of August, 2011!
for more information. | ||||
| 1. What can we do on the Blue Moon Beachland in the first week of August? | ||||
| A. Enjoy the welcome party. B. Go bike riding. C. Have cold drinks. | ||||
| 2. When will we enjoy the music shows on the Blue Moon Beachland? | ||||
| A. In the morning. B. In the afternoon. C. In the evening. | ||||
| 3. Where can we have fresh seafood on the Blue Moon Beachland? | ||||
| A. In Sand Garden. B. At Fishermen's Market. C. In Gold Street. | ||||
| 4. How can we get to the Blue Moon Beachland? | ||||
| A. By bus. B. On foot. C. By subway. | ||||
| 5. How can we get more information the Blue Moon Beachland? | ||||
| A. Send an email. B. Write a letter. C. Call the phone or surf the Internet. |