Check dowel pin retaining hardware , carry-thru spar , and wing fittings thoroughly

A、Checkdowelpinretaininghardware,cary-thnuspar,andwingfittingsgradually（逐渐的）.
B、Inspectdowelpinretaininghardware,camry-thruspar,andwingfittingscarefully.
C、Examinedowelpinretaininghardware,carry-thruspar,andwingfittingsfully.