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单选题The characteristics of good distance learning programs are the following EXCEPT _____.A students don’t have to travel away from home to take a testB the content of distance learning program is the same as that of the full time program in colleges and universitiesC the good distance learning programs include courses that are not taught in average universitiesD the relationship between students and professors are one-to-one
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单选题—Hurry up, or we’ll be late.—Take your time. it’s just ______ short distance from here to ______ cinema.A /; theB the; aC a; theD /; a
单选题Each time the distance from the speaker is doubled， volume decreases by（）.A 3dBB 6dBC 12dBD 24dB
单选题Which of the following is the correct signal flow for an analog multi-room audio system？（）A Source，Volume Control，Speaker，AmpB Source，Amp，Volume Control，SpeakerC Amp，Source，Volume Control，SpeakerD Speaker，Amp，Volume Control，Source
单选题（）we stand away from the church bell, it takes time for the sound waves to each us.A IfB WheneverC BecauseD Where
单选题In ship construction，keel scantlings should be the greatest（）.A at each frameB amidshipsC one-third the distance from the bowD one-third the distance from the stern
单选题Which of the following best describes the thermodynamic effect on the pressure and volume relationship with regards to saturated gases?（）A As pressure decreases, volume increasesB As volume increases, pressure increasesC As volume decreases, pressure decreasesD As pressure increases, volume increases
