单项选择题
After he （） the test, the engineer put down the results.
A.has finished B.finishes C.had finished D.would finish
单项选择题 Now that the valve is not worth （）, I suggest it （）.
单项选择题 （） to damage the protective coating on the inner side of the shell.
单项选择题 The following engine parts are found damaged and we are about to （） compensation from the shipyard.
