维修工程部管理的证件类型不包括：

wing tip brake

wiper

yaw

yaw damper

There has been a lot of _______ prejudice in American.

He is an incurable idealist; it＇s unlike to help him come down to earth and be more _______.

The relations between my mother and brother were getting worse as my brother grew older and more ______ .

Ecological vehicles are made of materials that can be easily _______ once they are dumped.

Tom goes to that pub every night to have a bottle of beer. He is a _______ customer.

To keep health, we have to keep _______ hours.