- 搜标题
- 搜题干
- 搜选项
单项选择题
A tow-stroke engine will theoretically develop _____________ the power of a four-stroke one of the same size.
A tow-stroke engine will theoretically develop _____________ the power of a four-stroke one of the same size.
A、the same
B、twice
C、three times
D、four times
