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【单选题】
已知在Ca3(PO4)2的饱和溶液中，c(Ca2+)=2．0×10-6mol.L-1，C(PO43-)=1．58×10-6mol.L-1，则Ca3(PO4)2的Ksp为( )。A.
2．0×10-29
B.
3．2×10-12
C.
6．3×10-18
D.
5．1×10-27
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举一反三
【单选题】What is a hospital-acquired infection?
A.
Functional infection
B.
Iatrogenic infection
C.
Idiopathic infection
D.
Nosocomial infection
E.
Organic infection
【简答题】PLC的工作原理,概括而言,PLC是按集中输入、集中输出,周期性( )的方式进行工作的。A. 并行扫描 B. 循环扫描 C. 一次扫描 D. 多次扫描
【简答题】感染源(souce of infection)
【多选题】Infection way and mode of enterobiasis ( )
A.
Oral infection
B.
Transdermal infection
C.
Retrograde infection
D.
Inhalation infection
【单选题】A health care associated infection is
A.
An infection that was not present or not incubating at time of admission
B.
An infection caused by the nurse
C.
An infection that was present on admission
D.
An infection that leads to isolation precautions
【简答题】abortive infection
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