新《技规》普速铁路部分第225条、新《技规》高速铁路部分第204条列车运行图是铁路行车组织工作的基础。所有与列车运行有关的铁路各部门，必须按列车运行图的要求，组织本*部门的工作，以保证列车按运行图运行。（）
小铁研实验我们主要是用来测定钢材的冷裂纹倾向，其实验方法是两侧焊双y型拘束焊缝，试验焊缝为斜y型，需要检测三个地方裂纹率，这三个地方是（） ["表面裂纹率","根部裂纹率","断面裂纹率","焊趾裂纹率"]
Loop guard and UniDirectional Link Detection both protect against Layer 2 STP loops. In which two ways does loop guard differ from UDLD in loop detection and prevention？（） ["Loop guard can be used with root guard simultaneously on the same port on the same VLAN while UDLD cannot.","UDLD protects against STP failures caused by cabling problems that create one-way links.","Loop guard detects and protects against duplicate packets being received and transmitted on different ports.","UDLD protects against unidirectional cabling problems on copper and fiber media.","Loop guard protects against STP failures caused by problems that result in the loss of BPDUs from a designated switch port."]
《行细》规定：及（其）以上、及（其）以下，及（其）以内、及（其）以外：均不包括本数。（）
D36钢是一种专用的抗层状撕裂钢。据此我们可推测（） ["采用了精炼手段，严格控制了S，P的含量","控制了夹杂物的形态","断面收缩率大","可用于受力复杂的焊接结构"]
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