标准化是指随着通信网的演变不断制定或修订全国统一的网络标准以及相关()标准的过程。
参考答案:国际
在图所示的电路中,电源电压不变.闭合开关后,滑动变阻器的滑片P向右端滑动时
A.电流表示数减小,电压表示数减小
B.电流表示数不变,电压表示数不变
C.电流表示数增大,电压表示数减小
D.电流表示数减小,电压表示数增大
A 35-year-old client is undergoing a brain computed tomography (CT) scan because of continued migraine headaches. He’s placed in the CT scanner and suddenly begins to complain of palpitations, sweating, shortness of breath, and shaking. The client is most likely experiencing()
A. an allergic reaction.
B. a myocardial infarction (MI).
C. a panic attack.
D. a hypoglycemic episode.