【单项选择题】
In motorships，there are two main circuits, （）.
A、A.one salt water, one fresh water
B、B.one salt water, one fuel
C、C.one fresh water, one fuel
D、D.one steam, one fuel
查看正确答案
A、There are two broadcast domains in the network. B、There are four broadcast domains in the network. C、There are six broadcast domains in the network. D、There are four collision domains in the network. E、There are five collision domains in the network. F、There are seven collision domains in the network.
