临床上可根据患者的一些临床表现判断患者服药与否判断抗胆碱物服用与否的临床表现是
A．头痛B．口干C．心率减慢D．手足湿冷E．多汗
参考答案：B
影响ADSL传输的因素中，衰减与频率的关系是（）.
A.频率越高，衰减越大
B.频率越高，衰减越小
C.频率与衰减无关
D.频率越低，衰减越大
MIDI enables people to use (11) computers and electronic musical instruments. There are actually three components to MIDI, the communications" (12) .", the Hardware Interface and a distribution (13) called "Standard MIDI Files". In the context of the WWW, the most interesting component is the (14) Format. In principle, MIDI files contain sequences of MIDI Protocol messages. However, when MIDI Protocol (15) are stored in MIDI files, the events are also time-stamped for playback in the proper sequence. Music delivered by MIDI files is the most common use of MIDI today.
A．device
B．protocol
C．network
D．controller
