以下选项中能引起银行流动性需求增加的是（）。
A．客户存入存款
B．客户提取存款
C．银行收回贷款
D．银行出售资产
参考答案：B
The nurse-manager of a hospital unit holds monthly staff meetings. During these meetings, she maintains control over the meeting and agenda, resists consensus decision making, and uses discipline and coercion to elicit desired behavior from staff. This manager uses what type of leadership style
A. Autocratic.B. Democratic.C. Participative.D. Laissez-fair
加入5%柠檬酸钠的血液静置一会儿后，中间一层白色物质是（ ）。
A．白细胞和红细胞
B．血小板
C．红细胞和血小板
D．白细胞和血小板
