螺纹标准中Tr3612（p6）P6表示螺纹。
参考答案：错
解析：螺纹标准中Tr3612（p6）Tr表示螺纹
(江苏省南通市2009期末调研)－Mary, how did your Math test go?
－I had thought I _________, but in fact I came in the top 10% in my class.
A．should have failed
B．couldn’t have failed
C．might have failed
D．shouldn’t have failed
肠梗阻的共同临床表现 __________ 、__________ 、__________ 、__________ 。
