1927年,美国遗传学家摩根(Thomas H. Morgan 1866-1945)与(Hermann Joseph Muller 1890-1967)开始一项全新的研究,他们通力合作,利用X射线造成 突变,揭示了昆虫变异的的机制。
A.
黑腹果蝇
B.
黑腹马蝇
C.
黑腹苍蝇
D.
黑腹麻蝇
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【简答题】Select the most appropriate statement. (1)( ) The issuing bank must use an advising bank. (2)( ) The issuing bank may use an advising bank. (3)( ) Single window credit is not acceptable. (4)( ) No...
【单选题】If the reimbursement instruction written on the payment order is expressed as ‘in cover, please debit our A/C with you’, the A/C relationship between the remitting bank and the paying bank must be ( ...
A.
the paying bank maintains an A/C with remitting bank
B.
the remitting bank maintains an A/C with paying bank
C.
both remitting bank and paying bank maintain their A/Cs with a third bank
D.
remitting bank and paying bank have their A/Cs with two different bank