He said that he had turned the main engine one complete revolution with the ().
A、turning gear
B、steering gear
C、spur gear
D、chain gear
A、turning gear
B、steering gear
C、spur gear
D、chain gear
A、he had grown up B、which had he grown up C、in which he had grown up D、he had grown up in it
A、Hardly had he arrived B、Hardly he had arrived C、No sooner did he arrive D、No sooner arrived he