A.上大下小，左右不對(duì)稱(chēng)
B.上小下大，左右不對(duì)稱(chēng)
C.上大下小，左右對(duì)稱(chēng)
D.上小下大，左右對(duì)稱(chēng)

A.正車(chē)時(shí)推尾向左；倒車(chē)時(shí)推尾向左
B.正車(chē)時(shí)推尾向左；倒車(chē)時(shí)推尾向右
C.正車(chē)時(shí)推尾向右；倒車(chē)時(shí)推尾向右
D.正車(chē)時(shí)推尾向右；倒車(chē)時(shí)推尾向左