【单选题】I’ve already ___ at the hotel.Can I put my luggage in your room for a while?
【简答题】一定量的空气,吸收了1.71×10 3 J的热量,并保持在1.0×10 5 Pa下膨胀,体积从1.0×10 -2 m 3 增加到1.5×10 -2 m 3 ,问空气对外作了多少功?它的内能改变了多少?
【判断题】Don’t put the hotel’s address and phone number on your luggage tags in order to avoid identity theft.
【单选题】一定量的空气吸收了 1.71 × 10 3 J 的热量,并保持在 1.0 × 10 5 Pa 下膨胀 , 体积从 1.0 × 10 prefix="st1" ns="urn:schemas-microsoft-com:office:smarttags" -2 m 3 ?xml:namespace> 增加到 1.5 × 10 -2 m 3 ,则空气对外界做的功为 J ;空气的内能改变了 J 。 pr...
【判断题】It’s important to put your credit cards in your check-in luggage.
【单选题】电容式传感器可以将待测量转换成( )信号。
【单选题】I’ve already ___ at the hotel.Can I put my luggage in your room for a while?