安装车轮时应注意轮胎花纹方向,即由轮胎上面看下去“八”字或“人”字的字顶对着拖拉机()。
A、前方
B、后方
参考答案:A
Do you know where Ottawa is?
Sorry, _____. [ ]
A. it's easy
B. I know about Ottawa
C. that's great
D. I don't know
最大可能诊断
A.结核性淋巴结炎B.慢性淋巴细胞白血病C.癌转移D.淋巴瘤E.风湿性疾病