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【单选题】
Can you say _____ certain when he will come here?A.
at
B.
for
C.
with
D.
In
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举一反三
【单选题】In their journey from the testis to the urethra, what is the correct order in which spermatozoa encounter the following parts of the duct system?
A.
Efferent ductule, rete testis, duct of epididymis, ductus deferens, ejaculatory duct
B.
Rete testis, efferent ductule, ductus deferens, seminal vesicle, ejaculatory duct
C.
Ejaculatory duct, ductus deferens, duct of epididymis, efferent ductule, rete testis
D.
Rete testis, efferent ductule, duct of epididymis, ductus deferens, ejaculatory duct
E.
Rete testis, efferent ductule, duct of epididymis, ductus deferens, seminal vesicle, ejaculatory duct
【单选题】In the male, regression of the paramesonephric duct system is induced by:
A.
testosterone
B.
estrogen
C.
progesterone
D.
human chorionic gonadotropin
E.
müllerian inhibitory substance
【简答题】single duct system
【多选题】某航空公司为增值税一般纳税人，2019年7月取得的含税收入包括航空培训收入57.72万元、航空摄影收入222.6万元、湿租业务收入199.8万元、干租业务收入245.7万元。该公司计算的下列增值税销项税额，正确的有（ ）。
A.
航空培训收入的销项税额5.72万元
B.
航空摄影收入的销项税额12.6万元
C.
湿租业务收入的销项税额16.5万元
D.
干租业务收入的销项税额28.27万元
【单选题】The main distribution duct in an air conditioning system which contains the cooling coils and filters is called the .
A.
manifold
B.
condenser
C.
chamber
D.
plenum
【单选题】Which of the following is not the organ of the duct system of the male reproductive system?
A.
epididymis
B.
seminal vesicles
C.
vas deferens
D.
urethra
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