弯曲试验时,经机加工后的试样直径或多边形()。
A.外接圆直径不小于25mm
B.内切圆直径不小于25mm
C.外接圆直径不大于25mm
D.内切圆直径不大于25mm
参考答案:B
He said, “ What is the matter?”
----He asked .
A.what the matter is
B.what the matter was
C.what is the matter
D.what was the matter
用暗疮针挤压暗疮内包含物的方法是()。
A.沿创面四周向刺破口处分别下压
B.对准创面用力下压
C.由创面一侧向另一侧用力挤压
D.由创面一侧向另一侧用力压刮