列车中相互连挂的车钩中心水平线的高度差,不得超过()mm。
E、技规
参考答案:C
—You have to believe in yourself. No one else will, if you don’t.
—________. Confidence is really important.
A.It’s not my cup of tea
B.I couldn’t agree more
C.I don’t think so
D.That’s not the point
关于十二指肠升部的描述,哪项是错误的?()
A.由水平部向左上斜行,至第2腰椎左侧折向前下
B.上方与胰体相邻
C.前面为横结肠及其系膜
D.十二指肠上襞位于其左侧
E.其后方与左肾相邻