A rolling, turbulent, circular-shaped cloud may form at the lower leading edge of the cloud—_____.
A. cumulus cloud
B. roll cloud
C. anvil cloud
D. high cloud
查看答案
When the cell becomes an area of predominant downdrafts, it is considered to be in the_____ stage.
A. cumulus
B. convection
C. mature
D. dissipating
工程项目的三阶段设计,是指初步设计、技术设计和 。
工程施工质量三阶段控制,一般包括事前控制、事中控制和 。