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【单选题】
( )是指路堤的填筑高度和路堑的开挖深度，是路基设计标高和地面标高之差。A．路基高度 B．路堤高度 C．路面高度 D．地基高度A.
A
B.
B
C.
C
D.
D
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举一反三
【单选题】What structure is indicated in the circle below?
A.
islets of langerhan
B.
renal corpuscle
C.
seminiferous tubule
D.
thymic corpuscle
【单选题】What structure is indicated in the circle?
A.
islet of langerhan
B.
renal corpuscle
C.
seminiferous tubule
D.
thymic corpuscle
【单选题】What structure is located only in the eukaryotic cell?
A.
Mesosome
B.
Nucleus
C.
Ribosome
D.
Plasma membrane
【单选题】What structure is used in the text ?
A.
Comparison /contrast pattern
B.
Cause-and-effect pattern
【单选题】What structure is applied in Para.2?
A.
general-specifical--general
B.
general-specific
C.
specifical--general
【简答题】What structure is this in endocardium?
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