工程设计中一般要求水平管中的气—液两相流的流型应是下列哪一组流型
A. 气泡流或柱状流
B. 柱状流或环状流
C. 环状流或分散流
D. 环状流或气泡流
查看答案
Match the environmental problem from the box with the correct definition 1-5. flooding drought smog extinction leak A violent wind that destroys buildings and trees: hurricane The escape of a dangerous substance into the local environment: ______
Underline the part of the text that means: What can supermarkets in particular do to help the environment Make two sentences about each of the following: Waste: They can put labels on products with instructions on how to recycle them. ______ Transport: ______ Energy: ______ Suppliers: ______
工艺流程中下述哪个工艺设备不宜设置安全阀
A. 顶部操作压力大于0.07MPa的压力容器
B. 顶部操作压力大于003MPa的蒸馏塔
C. 加热炉炉管
D. 可燃气体或液体受热膨胀,可能超过设计压力的设备
The table shows the impressive performance of two uranium mining companies on the Australian stock market. Make sentences about the data using the words given. Make sure you use the correct prepositions.PriceAus$JanFebMarAprMayJunFormetalUromin3.62.44.22.84.23.24.23.04.83.75.43.6 stood / January Uromin shares stood at $2.4 in January. climbed / $5.4 / the end of June