直接标价法下,如果单位外币换取的本国货币数量增多,则表明()
A.本币对外升值
B.本币对外贬值
C.外币汇率下跌
D.本币汇率上升
参考答案:B
In data communication, data link is those parts of two data terminal equipments that are controlled by a protocol along with the (71) data circuit, which together enable data (72) . So-called protocol means, in short, a set of rules that determines the behavior of functional units in achieving communication.
Data circuit, however, consists of a pair of (73) transmission channels that provides a means of two-way data transmission. Between data switching exchanges, the data circuit may or may not include data circuit-terminating equipment (DCE), depending on the type of (74) used at the data switching exchange. Between a data station and a data switching exchange or data concentrator, the data circuit includes the DCE at the data station end, and may include equipment (75) to a DCE at the data switching exchange or dam concentrator location.
(74)处填()。
A.interface
B.port
C.window
D.entrance
烧伤早期处理正确的是( )
A.烧伤后立即冷敷、治疗
B.碱烧伤后立即以中和剂冲洗
C.烧伤后,创面以凡士林覆盖转运
D.清创时,必须完全清除污物,包括陷入创面内的煤渣等
E.氢氟酸烧伤后,注射钙剂或镁剂,局部封闭