在队列研究中,提高调查诊断技术,同等地对待每个研究对象,做好质量控制,主要是为了减少()
A.选择偏倚
B.回忆偏倚
C.失访偏倚
D.混杂偏倚
E.信息偏倚
参考答案:E
被毒蛇咬伤后,下列哪一种急救措施是错误的:()
A.于伤口近心端缚扎
B.高锰酸钾冲洗伤口
C.口吸法排毒
D.口服食醋解毒
E.有出血现象者立即扩创解毒
Microsoft’s COM is a software (71) that allows applications to be built from binary software components. COM is the underlying architecture that forms the foundation for higher-level software services, like those provided by OLE. COM defines a binary standard for function calling between components, a way for components to dynamically discover the interfaces implemented by other components, and a mechanism to identify components and their interfaces uniquely. OLE is a compound (72) standard developed by Microsoft. OLE makes it possible to create (73) with one application and link or embed them in a second application. Embedded objects retain their original format and (74) to the application that created them. Support for OLE is built into the Windows and MacOS Operating Systems. A (75) compound document standard developed mainly by Apple and IBM is called OpenDoc.
A.contained
B.competing
C.connecting
D.completing