- 搜標(biāo)題
- 搜題干
- 搜選項(xiàng)
單項(xiàng)選擇題
The principal difference between loop scavenging and crossflow scavenging, as used in single acting diesel engines, is the （）
A.direction of air flow within the cylinder
B.sequence of port opening
C.method of opening exhaust ports
D.volume of air admitted to the cylinder
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