(4)d点的短路冲击电流ich(Kch取1.8)为( )。
A. 24kA
B. 23kA
C. 26kA
D. 25kA
The passage discusses the aim of
A. the organization.
B. blood centres in the USA.
C. FDA new rules.
D. AIDS prevention.
(2)d点的短路后0.2s的短路电流周期分量有效值I0.2为( )。
A. 10.94kA
B. 11.94kA
C. 8.94kA
D. 9.94kA
Blood donors are advised to contact
A. Berkshire county office.
B. St John Ambulance.
C. John Radcliffe Hospital.
D. Royal Berkshire Hospital.
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