In large mine openings, low air velocities ( ) are common because of the large open-space volume
举一反三
- In large mine openings, How air velocities are common because of the large open-space volume
- In large mine openings, How air velocities are common because of the large open-space volume A: 正确 B: 错误
- Traffic jam and the consequences such as noise, air pollution ,violence and human stress are becoming the common scenario of large metropolitan areas everywhere.
- The instruments traded in money markets have some common features, including ( ). A: more liquid and safer B: low default risk and low yields C: short-term maturities D: large denominations
- Which area has a large space for storage?