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【单选题】
主量子数为3的电子层中,最多能容纳的电子数是( )A.
8
B.
18
C.
24
D.
32
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举一反三
【单选题】If the bill of exchange is payable “60 days after date”, the date of payment is decided according to( ).
A.
the date of acceptance
B.
the date of presentation
C.
the date of issuance
D.
the date of maturity
【判断题】If a bill is payable "at 30 days after date", the date of payment is decided according to the date of acceptance.
A.
正确
B.
错误
【判断题】If a draft is payable at 30 days after date, the date of payment is decided according to the date of acceptance.
A.
正确
B.
错误
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