Energy losses ____ friction occur in every machine.
A: become to
B: due to
C: in view of
D: owe to
A: become to
B: due to
C: in view of
D: owe to
举一反三
- It is best to _____ wear through friction in designing the parts of every machine. A: have insight into B: come up with C: allow for D: reflect on
- 中国大学MOOC: We plan to _________ this machine when funds become available sometime in 2015 with an upgraded machine.
- We plan to _________ this machine when funds become available sometime in 2015 with an upgraded machine. A: risk B: undertake C: violate D: replace
- It is the losses caused by friction that we must try to overcome by various means.
- The mechanical efficiency of an engine （） because losses occur in the form of friction.