【单选题】You should frequently compare drum-mounted and remote-reading water level indicators_____ between these have contributed to failures because of overheating through shortage of water, when a boiler was...
【简答题】啤酒是生活中常见的饮料,其中含有CO 2 、H 2 O、蛋白质等物质.为研究啤酒的相关问题,现进行如下实验: (1)观察一瓶啤酒,未见气泡;打开啤酒瓶盖,会冒出大量气泡,原因是 ______.使啤酒的气泡快速放出的方法有搅拌、振荡、______等. (2)为验证放出的气泡是CO 2 ,你的实验方法是 ______.
【单选题】Why did the writer compare reading a thick book to a building?
A.
Both of them need time.
B.
Both of them have precise structures.
C.
Both of them need imagination.
【单选题】Why did the writer compare reading a thick book to a building?
A.
Both of them need time.
B.
Both of them have precise structures.
C.
Both of them need imagination.