如果WLAN网络中容错性和可用性非常关键,那么需要在网络中使能().
A.AP设备的热备
B.L2/L3漫游
C.负载均衡
D.非法AP检测
参考答案:A, B, C, D
香豆素类药物的抗凝作用机制是
A.妨碍肝脏合成Ⅱ、Ⅶ、Ⅸ、Ⅹ凝血因子
B.耗竭体内的凝血因子
C.激活血浆中的AT-Ⅲ
D.激活纤溶酶原
E.抑制凝血酶原转变成凝血酶
Your vessel has a midship engine room and the cargo is concentrated in the end holds.The vessel is().
A.sagging with tensile stress on main deck
B.sagging with compressive stress on main deck
C.hogging with tensile stress on main deck
D.hogging with compressive stress on main deck