下列不属于信必可都保装置特点的是（） A.患者使用方便 B.肺部沉积率高 C.稳定性

猝死型冠心病（）

A.病人无症状，而心电图有心肌缺血性改变，心肌无明显组织形态改变

B.由于冠状动脉闭塞以致心肌急性缺血坏死，症状严重，常伴有心力衰竭、心律失常、心源性休克、猝死等严重并发症

C.因原发性心脏骤停而死亡，多为心脏局部发生电生理紊乱，引起严重心律失常所致

D.因长期心肌缺血导致心肌纤维化引起，表现为心脏增大、心力衰竭和心律失常

E.发作性胸骨后疼痛，为一时性心肌供血不足引起，心肌可无组织形态改变或伴有纤维化改变

“三法三卡”中的“三法”指（）。

A.岗位健康保障法

B.岗位安全保障法

C.岗位关键安全作业操作法

D.现场保险法

E.现场处置能力

The purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable (46) of the technical requirements for the software product.
During the requirements definition phase, the requirements definition team uses an iterative process to expand a broad statement of the system requirements into a complete and detailed specification of each function that the software must perform and each (47) that it must meet. The starting point is usually a set of high-level requirements from the (48) that describe the project or problem.
In either case, the requirements definition team formulates an overall concept for the system and then defines (49) showing how the system will be operated, publishes the system and operations concept document, and conducts a system concept review (SCR).
Following the SCR, the team derives (50) requirements for the system from the high-level requirements and the system and operations concept. Using structured or object-oriented analysis the team specifies the software functions and algorithms needed to satisfy each detailed requirement.

A．producer

B．customer

C．specification

D．analyser

无机铜制剂有什么局限性？

患儿男，生后2天，出生体重为2400g。因吸入性肺炎入院，入院时患儿呼吸急促，口唇稍发绀。即置于辐射保暖床上抢救。

该患儿吸氧的流量应选择每分钟为（）

A.1L

B.2L

C.3L

D.4L

E.5L