钩体病病理损害的基本特点为()。
参考答案：毛细血管损伤所致的严重功能紊乱
美国最著名的新闻杂志是（）
The ARQ mode should be applied（）.
A.when two stations communicate with each other
B.in any radio system and at any time
C.when one ship sends a message to another station
D.for communication among some stations
