【单选题】I don’t know the reason _____you were absent from the meeting, but I am sure that someone will tell me the reason____you haven’t told me.
【简答题】I don’t know the reason _____ you were absent from the meeting, but I am sure that someone will tell me the reason _____ you haven’t told me. (5.0分)A. why; that B. that; why C. because; which D. of...
【单选题】从分子水平来说,自然选择淘汰一些稀少的等位基因,结果就是拥有这些等位基因的个体不能留下后代或留下较少的后代,这种自然选择的类型是:
A.
正选择( positive selection )
B.
负选择( negative selection or purifying selection )
【多选题】关于再生段跟踪标识失配(TIM)告警,下面哪些描述是正确的:()。
A.
使用J0字节重复地发送段接入点标识符,收端能据此确认其与指定发送端处于持续连接状态。
C.
在不同两个运营者的网络边界处要使设备收、发两端的J0字节相同——匹配。
D.
通过J0字节可使运营者提前发现和解决故障,缩短网络恢复时间。
【单选题】I don’t know the reason _____you were absent from the meeting, but I am sure that someone will tell me the reason____you haven’t told me.
【多选题】用于接收端确认与指定发端处于持续连接状态的开销是