In manufacturing, cheaper materials are constantly being _________ for the more expensive kind.
A: replaced
B: transcended
C: transplanted
D: substituted
A: replaced
B: transcended
C: transplanted
D: substituted
举一反三
- In manufacturing, cheaper materials are constantly being ______ for the better and more expensive kind. A: replaced B: transformed C: displaced D: substituted
- 2. In production cheaper materials are being __ for the better, more expensive kind. A: discarded B: replaced C: converted D: substituted
- In recent years, computer are being made ______. A: smaller and cheaper B: larger and more expensive C: more difficult to use D: to work more slowly
- In this shipment, Type 101 has been ()Type 102. A: replaced by B: substituted by C: replaced for D: substituted with
- 中国大学MOOC: 4. It refers to a kind of economy, in which materials are regenerated and constantly flow around a “closed loop” system, rather than being used a few times and then discarded.