【判断题】脂溶性较强的物质,在特殊膜蛋白质的帮助下顺浓度梯度和电位梯度扩散现象是易化扩散。
【多选题】根据使用的主要教学方法,可以将课分为()。
【单选题】What best describes processing delay?()
A.
the time required from receipt of the incoming frame, until the frame/packet has been queued for transmission
B.
the time taken for a single packet to traverse the physical medium from one end to the other
C.
the time taken to place a frame on the physical medium for transport
D.
the time spent for a packet to reside in the output queue of a router
【判断题】特别提款权可以在政府间发挥作用,也可以被企业使用。
【单选题】32 Processing delay does not include the time to ( ).
A.
examine the packet’s header
B.
wait to transmit the packet onto the link
C.
determine where to direct the packet
D.
check bit-error in the packet