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问题 问答题

如果换成含18O的氧气，在有氧呼吸过程，最先出现18O的是哪种物质？随后又有哪些物质中也会出现放射性。

答案

最先出现的是放射性的H218O，原因是由于18O2与[H]结合生成H218O，然后H218O会参与有氧呼吸的第二阶段，H218O与丙酮酸反应生成了C18O2

问答题

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(1)销售合同


(5)装运期限：
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2006DEC25 15:55:52 LOGICAL TERMINAL P005
MT700ISSUE OF A DOCUMENTARY CREDIT PAGE 00001
RUNC SWPR3
UMR 00182387
MAGACK DWS7651 AUTH OK, KEY B19604214FAEA982, BKCHCNBJ SAIB JPJT RECORD
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APPLICATION HEADER 0 700 1547 061225 SAIBJPJTCXXX 3846 992024 050225 1447
*ASAHI BANK LTD, ＜FORMERILY THE
*KYOWA SAIYAMA BANK, IJTD. ＞
*TOKYO
USER HEADERSERVICE CODE 103:
BANK PRIORITY 113:
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INFO. FROM CI 115:
SEQUENCE OF TOTAL *27 : 1/1
APPLICABLE RULES*40 : IRREVOCABLE
DOC, CREDIT NUMBER *20 : LC-788-392328
DATE OF ISSUE *31C: 061225
EXPIRY *31D: DATE 070215
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ITC BUILDING 6TH FLOOR SUITE 602
1-8-4 CHOME ISOBE-DORI CHUO KU KOBE JAPAN
AMOUNT *32B: CURRENCY HKD AMOUNT 26400,00
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BY NECOTIATION
DRAFTS AT... *42C: DRAFTS AT SIGHT FOR FULL INVOICE
VALUE
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*KYOWA SAIYAMA BANK. LTD. ＞
*TOKYO
PARTIAL SHIPMENTS *43P: ALLOWED
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LOADING ON BOARD/DISPATCH/
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单项选择题

一些大型海藻，它们的吸附容量比其它种类生物体高得多，与（）相当。

A.离子交换树脂

B.活性碳

C.天然沸石

D.粘土
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