自然光和偏振光的振动有什么特点？

长期股权投资的后续计量方法中，权益法适用的情形包括()。

A.投资企业能够对被投资企业实施控制的长期股权投资 

B.投资企业能够对被投资企业实施共同控制的长期股权投资 

C.投资企业对被投资企业具有重大影响的长期股权投资 

D.投资企业对被投资企业无重大影响的长期股权投资 

E.投资企业能够对被投资企业实施绝对控制的长期股权投资

支气管哮喘与心源性哮喘不好鉴别时可使用的药物是（）

A.毛花苷C

B.氨茶碱

C.呋塞米

D.吗啡

E.皮质激素

编程工作方式的主要功能是输入新的控制程序或对已有的程序予以编辑。

Typically, these are concern with the establishment of (66) the network and with the control of the flow of messages across this channel. The provision of such facilities is only part of the network requirements, however, since in many applications the communicating computers may be of different types. This means that they may use different programming languages and, more importantly, different forms of (67) interface between user(application)program, normally referred to, as application processes or APs, and the underlying communication services may be (68) For example, one computer may be a small single -user computer, while another may be a large (69) system. In the earlier days of computer communication, these issues meantthat only closed communities of computers ( that is, from the same manufacturer) could communicate with each other in a meaningful way. IBM’s Systems Network.
Architecture (SNA) and DEC’s Digital Network Architecture (DNA) are just two examples of Communication software packages produced by manufacturers to allow their systems to be int erconnected together. These proprietary packages, however, of which there am still many inexistence, do not address the problem of universal interconnect ability, or open systems interconnection. In an attempt to alleviate this problem, (70) , in the late 1970s, formulated a reference model to provide a common basis ( or the coordination of standards developments and to allow existing and evolving standards activities to beplaced into perspective with one another.

A. same B. similar C. different D. dependent

当事人一方违约后，另一方应采取适当措施防止损失扩大，这是非违约方的()。

A．延伸义务

B．连带义务

C．减损义务

D．连带责任