No.1 engine is _______ due to bird strike on initial climb, we’re returning.

单选题

“No.1 engine is overheating” means No.1 engine _______ .

答案解析

单选题

There is no success _____ hardship.()。

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单选题

We‘ve got to turn round due to bird strike, engine No.2 is _______ .

答案解析

单选题

most troubles likely to occur with marine diesel engine can, if located in time, be remedied with no difficulty and many can be _____ if the engine is maintained with a high sense of responsibility to the people on the part of the motormen and engineers.

答案解析

单选题

_____ can make a mistake; no one is perfect.

答案解析