中枢神经系统白血病重者的临床表现为（）
A.抽搐、昏迷
B.呕吐
C.骨骼剧痛
D.头晕、头痛
E.颈项强直
参考答案：A, B, E
发行人应披露最近2年股利分配政策、实际股利分配情况以及发行后的股利分配政策。（）
Pericardiocentesis is performed on a client with cardiac tamponade. This procedure would be deemed effective if
A．aspirated blood clots rapidly.
B．blood pressure decreases.
C．blood pressure increases.
D．heart sounds become muffled.
