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【单选题】
色氨酸操纵子的调控作用受两个系统的控制,其中一个需要前导链的翻译,下面哪种物质可以调控该系统A.
色氨酸
B.
cAMP
C.
色氨酸 -tRNA Trp
D.
葡萄糖
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反馈参考答案：
举一反三
【简答题】Inquiry Counter-offer Offer Acceptance
【单选题】We shall be glad to ( ) business relations with you
A.
enter
B.
entered into
C.
start
D.
establishing
【简答题】to forward an offer(or to send an offer)
【简答题】We shall be glad to ship the goods by a direct steamer to Vancouver within 30 days after receipt of you L/C.(英译中)
【简答题】We shall be glad to send you the necessary information about our machine tools _________ request.
【简答题】to cable an offer(or to telegraph an offer)
【简答题】to offer for/to make an offer for
【简答题】to get an offer(or to obtain an offer)
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