某微波炉生产企业，频频使用价格策略从而在市场上获得了领导地位。1996年到2000年

患者，女，34岁，BP 210/130mmHg。无高血压家族史。左上腹部可闻及血管杂音。

下列各项对诊断的提示作用最大的是

A．患者年轻

B．起病急剧

C．肾区血管杂音

D．血压增高不降

E．家族史

The（）is a general description of the architecture of a workflow management system used by the WFMC, in which the main components and the associated interfaces are summarized. The workflow enactment service is the heart of a workflow system which consists of several（）. In a workflow system, a process is specified using the process definition tool. Usually, processes are defined in terms of a（）, which consists of（）indicated using a circle, and（）shown as a rectangle. These two components can be linked by means of a directed arc.

The workflow enactment service is the heart of a workflow system which consists of several（）

A．workflow engines

B．processes

C．workflow threads

D．tasks

简述超声电视声成像测井原理。

After extinguishing a fire with C02,it is availabe to（）.

A.use all CO₂ available to cool the surronding area

B.stand by with water or other agents

C.thoroughly ventilate the space of CO₂

D.jettison all buring materials

倾角大于12°的采煤工作面不得采用下行通风。