有关烧伤焦痂切开减张，以下哪些是恰当的（）

A.所有焦痂切开减张术，必须在麻醉下进行

B.为避免加重损伤，减张切口不应超过创面边界

C.因焦痂切开减张术可加重局部组织的损伤，引入污染，故应慎重进行；在肢体，应在末梢毛细血管反应明显延迟、感觉减退或消失时进行

D.切口一般在躯干、肢体的两侧进行，以避开主要的血管、神经

E.减张切口应充分止血

Microsoft’s COM is a software (146) 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 (147) standard developed by Microsoft. OLE makes it possible to create (148) with one application and link or embed them in a second application. Embedded objects retain their original format and (149) to the application that created them. Support for OLE is built into the Windows and MacOS Operating Systems. A (150) compound document standard developed mainly by Apple and IBM is called OpenDoc.

（149）是（）

A.characteristics

B.address

C.page

D.links