下列为恶性肿瘤的是（） A.畸胎瘤 B.精原细胞瘤 C.纤维脂肪瘤 D.血管瘤 E.

A management information system （） the business managers the information that they need to make decisions. Early business computers were used for simple operations such （） tracking inventory, billing, sales, or payroll data, with little detail or structure. Over time. these computer applicationsbecame more complex, hardware storage capacities grew, and technologies improved for connecting previously （） applications. As more data was stored and linked, managers sought greater abstraction as well as greater detail with the aim of creating significant management reports from the raw, stored （） . Originally，the term "MIS" described applications providing managers with information about sales, inventories, and other data that would help in （） the enterprise. Over time, the term broadened to include：decision support systems，resource management and human resource management，enterprise resource planning(ERP), enterprise performance management(EPM), supply chain management(SCM)，customer relationship management(CRM)，project management and database retrieval applications

As more data was stored and linked, managers sought greater abstraction as well as greater detail with the aim of creating significant management reports from the raw, stored （）

A．data

B．number

C．word

D．detail

钢丝绳在吊起重物时发生断裂，则说明钢丝绳的______不够。

A．韧性

B．强度

C．刚度

D．硬度

合同条款的种类有哪些？

事务的持续性是指（）。

A、事务中包括的所有操作要么都做，要么都不做

B、事务一旦提交，对数据库的改变是永久的

C、一个事务内部的操作及使用的数据对并发的其它事物是隔离的

D、事务必须是使数据库从一个一致性状态变到另一个一致性状态

分馏循环升温操作过程中，在（）℃前先彻底脱水后再继续升温。

A、250

B、200

C、180

D、150