集装箱装卸桥海侧轨道中心线向外至集装箱吊具铅垂中心线之间的最大水平距离是指______。
参考答案:
解析:外伸距
---That must have been a terrible experience.
---Yeah.I in the damaged car,unable to move.
A.was stuck
B.have been stuck
C.am stuck
D.had been stuck.
有机物分子式为C4H10O,能与金属钠反应放出H2,该化合物中,可由醛还原而成的有( )
A.1种
B.2种
C.3种
D.4种