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【单选题】
已知某数字传输系统传输四进制数字信号的传码率为1200波特,该系统的传信率为多少? 保持系统传信率不变,传输二进制数字信号的传码率为多少?A.
1200 bit/s;1200波特
B.
1200 bit/s;2400波特
C.
2400 bit/s;2400波特
D.
2400 bit/s;1200波特
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举一反三
【单选题】O f the three branches of phonetics, the longest established, and until recently the most highly developed, is phonetics.
A.
auditory
B.
acoustic
C.
articulatory
D.
none of the above three
【单选题】Until recently the main killers in Asia and the Pacific have been
A.
economic gains
B.
lost productivity
C.
chronic diseases
D.
infectious and parasitic diseases
【单选题】Until recently the halls of North High in Minneapolis were lined with vending machines where students could buy soda pop and other sugary drinks, as they can in most other high schools in the nation. ...
A.
encouraged
B.
allowed
C.
unlawful
D.
unprofitable
【判断题】Of the three branches of phonetics, the longest established, and until recently the most highly developed, is acoustic phonetics.
A.
正确
B.
错误
【判断题】O f the three branches of phonetics, the longest established and until recently the most highly developed, is articulatory phonetics.
A.
正确
B.
错误
【单选题】孙某,女,43岁,主诉“胁腹胀痛1月余”,伴见胁肋胀满疼痛,善太息,纳呆便溏,精神紧张时泻,泻后痛减,苔白腻,脉弦。请问该病涉及哪些脏腑?
A.
心肾
B.
肝脾
C.
肝肾
D.
肺肾
E.
肺肝
【简答题】英汉互译。 1. chair ___________ 3. bed ___________ 5. 腿 ___________ 2. 学校 ___________ 4. body ___________ 6. 脚 ___________
【简答题】中英文互译: body lotion
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