列车以调车方式进行摘挂或转线而发生的事故,算列车事故。
参考答案:错
Sometimes we might even need to spend some time _____ into a question or a request. [ ]
A. lead
B. to lead
C. leads
D. leading
起重机上起升机构的制动器必须能可靠地制动1.25倍的额定载荷。