高速1/9道岔,其道岔开口方向下一定位点拉出值为()。
A、0mm
B、150mm
C、200mm
D、250mm
参考答案:A
_____ on the bed , he _____ to his parents that blackbirds had_____ their eggs on Mars.[ ]
A. lay; lying; lied
B. lied; lied; lied
C. laid; laid; laid
D lying; lied; laid
门静脉的正常压力约在()之间,门静脉高压症时,压力可升高至2.94~4.90kPa。