1977年,天津汉沽发生()地震,是唐山7.8级大震的又一次强余震。
A.6.0级
B.6.2级
C.6.4级
D.6.8级
参考答案:B
肺气肿患者心浊音界改变的特点是()
A.向左下扩大
B.向右扩大
C.向左右两侧扩大
D.缩小
E.不变
The (1) 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 (2) . In a workflow system, a process is specified using the process definition tool. Usually, processes are defined in terms of a (3) , which consists of (4) indicated using a circle, and (5) shown as a rectangle. These two components can be linked by means of a directed arc.
5()
A.transmitters
B.transitive
C.transitions
D.transformations