起重机轨道通常按照()来选用。
A.车轮工作宽度;
B.接触应力;
C.车轮工作宽度和接触应力;
D.运行速度。
参考答案:C
I rang and got ______ to him and he said he had got ______ the examination.
A.off, out
B.through, through
C.along, back
D.away, to
蛇头疔即西医所称的()
A.甲沟炎
B.化脓性指头炎
C.化脓性腱鞘炎
D.掌中间隙感染
E.急性淋巴结炎