【 】面对的是操作人员和低层管理人员。
参考答案：OLTP
解析：OLTP面对的是操作人员和低层管理人员。
the students in this primary school is about four thousand, and of them are boys.[ ]
A. A number of; three fifth
B. A number of; three fifths
C. The number of; three fifth
D. The number of; three fifths
金代张从正把推拿列为汗法之一。
