根据车钟记录簿记载规定,下列哪个符号表示完车()。
A.√√
B.√
C.×
D.○
参考答案:D
Any car that would ____ these young customers has to have three main features, great style, strong performance and a low price.
A.attend to
B.contribute to
C.appeal to
D.add to
气缸盖螺栓预紧力大小均匀,可避免因()而引起的疲劳断裂。
A.附加应力
B.机械应力
C.热应力
D.A+B+C