(3)d1点的超瞬变短路电流周期分量有效值I"为( )。
A. 18.2kA
B. 21.2kA
C. 20.2kA
D. 19.2kA
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What is NOT included in the price
A. Local dept tax.
B. Return flights.
C. Transfers.
D. Accommodation.
(3)短路点d的短路全电流最大有效值Ich为( )。
A. 13.93kA
B. 16.93kA
C. 14.93kA
D. 15.93kA
Which of the following is NOT an advantage of computertowns
A. Experts give lectures and talks on computers.
B. Experts are on hand to answer people's questions.
C. People are left to discover computers on their own.
D. There are computers around for people to practise on.
English language publications in China are growing in volume and（）.
A. circulation
B. rotation
C. circumstance
D. appreciation
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