CRTSⅠ型板式无砟轨道底座及凸台施工前,对无碴轨道结构宽度范围内的下承层凿毛时,见新面不应小于()%。
A、30
B、50
C、80
D、90
参考答案:B
属于互源性人畜共患病的是()
A.棘球蚴病
B.日本血吸虫病
C.肉孢子虫病
D.旋毛虫病
E.肝片吸虫病
()doesn’t need to change package of goods or to stop in any place between the origin and destination point.
A. Through transport
B. Transfer transport
C. combined transport
D. Motor transport