辙叉顶面和侧面的任何部位有裂纹为辙叉轻伤。
参考答案：对
Without your help, I _____the exam last term.
A．haven’t passed
B．wouldn’t pass
C．would have failed in
D．failed in
绞窄性肠梗阻最易发生的酸碱失衡类型是
A．呼吸性碱中毒B．代谢性酸中毒C．代谢性碱中毒D．呼吸性酸中毒
