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【简答题】
垂直入射于异质界面得超声波反射声压和透射声压( ) A.与界面二边材料的声速有关 B. 与界面二边材料的密度有关 C. 与界面二边材料的声速有关 D.与入射声波波型有关
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【单选题】The chairman was impressed by the consensus of their opinion, based on reports from various media.
A.
controversy
B.
resemblance
C.
diversification
D.
agreement
【简答题】The table below gives information about the percentage of land covered by forest in various countries in 1990 and 2005, with estimated figures for 2015. Summaries the information by selecting and repo...
【单选题】The Adult Vocational College is an opportunity to gain the right qualifications for various careers, for it offers an ______ range of subjects and courses.
A.
additional
B.
excessive
C.
adequate
D.
extensive
【单选题】Instead of being situated at a fixed campus,the City University conducts classes at various sites deemed convenient to students.
A.
considered
B.
located
C.
advised
D.
modified
【单选题】The flower shop became prosperous with its __________of roses with high quality and various colors.
A.
procession
B.
array
C.
succession
D.
string
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