在电气化铁路区段,发现接触网导线断落时,周边人员必须远离()m以外,并对该处进行防护。
参考答案:10
These pictures will show you____.
A.how did Japanese Earthquake look
B.how Japanese Earthquake looked like
C.what did Japanese Earthquake look like
D.what Japanese Earthquake looked like
颈椎病的分型不包括()
A.脊髓型
B.神经根型
C.交感神经型
D.椎动脉型
E.椎间盘突出型