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用来判断马的年龄的牙齿——门齿顶端下的一个深穴是？
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在硫磺回收燃烧炉内，酸气中丙烷增加1%，有机硫生成率上升（）。
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为了节约系统资源，EVDO系统采用了信道编码的检纠错功能与传统ARQ重传功能相融合的（）技术。
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男性，56岁。左腹股沟肿物10年，行路时出现，平卧后消失，3小时前突感肿物疼痛，用手压迫亦不能还纳，伴恶心，未呕吐，无发热，白细胞8×109/L，考虑为（）。
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阅读以下信用证，并选择填空。 Department: A SWT023BO1 Sep/No: 004951 Message Received On: 2008-05-12/16:56:50 15.03 16:38 33062 BOCSH A CN * 33062 BOCSH A CN ××××× LOCAL TIMF MON MAY 12 16:09:20 2008 TO: BANK OF CHINA, SHANGHAI SWIFT CODE: BKCHCNBJA300 FROM: NATL AGRICULTURAL COOPERATIVE FEDN, SEOUL TEST-KEY: SEE 72 FIELD (CAL FOR 116188) MUR: 000000000482161: MESSAGE-TYPE: 700 ISSUE OF A DOCUMENTARY CREDIT +27: SEQUENCE OF TOTAL 1/1 +40A: FORM OF DOCUMENTARY CREDIT IRREVOCABLE +20: DOCUMENTARY CREDIT NUMBER JC968509MU00158 :31C: DATE OF ISSUE 080515 +40E: APPLICABLE RULES UCP LATEST VERSION +3ID: DATE AND PLACE OF EXPIRY 080715 CHINA +50: APPLICANT RAIN DREANS IMP. & EXP. CORP. NO. 90, MOSQUE ROAD, SE- OUL, KOREA +59: BENEFICIARY SHANGHAI WENTONG CO., LTD. 1125 YANCHANG ROAD, SHANCHAI, CHINA +32B: CURRENCY CODE, AMOUNT: USD22 422 +41D: AVAILABLE WITH...BY... ANY BANK BY NEGOTIATION 42C: DRAFTS AT... 60DAYS AFTER SIGHT 42A: DRAWEE AMERICAN EXPRESS BANK LTD., NEW YORK 43P: PARTIAL SHIPMENTS ALLOWED 43T: TRANSSHIPMENT ALLOWED 44E: PORT OF LOADING/AIRPORT OF DEPARTURE CHINA PORT 44F: PORT OF DISCHARGE/AIRPORT OF DESTNATION BUSAN KOREA 44C: LATEST DATF OF SHIPMENT 080708 45A: DESCRIPTION OF GOODS AND/OR SERVICES +TRADE TERMS: CIF BUSAN KOREA ORIGIN: CHINA + Trolley Cases TS503214 1 104PCS TS503215 1 149PCS TS503216 1 440PCS :46A: DOCUMENTS REQUIRED +SIGNED COMMERCIAL INVOICE IN QUADRUPLICATE +PACKING LIST IN QUADRUPLICATE SHOWING PIECE LENGTH PER PACKAGE +FULL SET OF CLEAN ON BOARD OCEAN BILLS OF LADING MADE OUT TO THE ORDER OF NATIONAL AGRICULTURAL COOPERA- TIVE FEDERATION MARKED "FREIGHT PREPAID" AND NOTIFY AC- COUNTEE +INSURANCE POLICY OR CERTIFICATE IN DUPLICATE, EN- DORSED IN BLANK FOR 11OPCT OF THE INVOICE VALUE, EXPRESSLY STIPULATINC THAT CLAIMS ARE PAYABLE IN THE CURRENCY OF THE DRAFT, ALSO INDICATING A CLAIMS SETTLING AGENT IN KOREA AND INSURANCE MUST INCLUDE INSTITUTE CARGO CLAUSE: ALL RISKS, WAR RISKS AND SRCC +COPY OF FAX/TLX SENT TO APPLICANT ON SHIPMENT DATE ADVISING SHIPPING DETAILS ADDITIONAL CONDITION 47A: +BILLS OF LADING ARE INDICATED NAME ADDRESS AND TELE- PHONE NUMBER OF CARRYING VESSEL'S AGENT AT PORT OF DESTINATION :71B: CHARCES EXCEPT OTHERWISE STATED. ALL BANKINC CHARGES OUTSIDE KOREA INCLUDING REIMBURSING BANK'S CHARGES ARE FOR BENEFICIARY'S ACCOUNT :48: PERIOD FOR PRESENTATION DOCUMENTS TO BE PRESENTED WITHIN 21 DAYS AFTER THE DATE OF SHIPMENT BUT IN ANY EVENTS WITHIN THE CREDIT VALIDITY +49: CONFIRMATION INSTRUCTIONS WITHOUT 53A: REIMBURSING BANK AMERICAN EXPRESS BANK LTD, NEW YORK :78: INSTRUCTIONS TO THE PAYING/ACCEPTING/NEGOTIATING BANK +THIS CREDIT IS AVAILABLE AT SIGHT BASIS, WITH ACCEPT- ANCE COMM. AND DISCOUNT CHARGES FOR APPLICANT'S AC- COUNT +PLS CLAIM REIMBURSEMENT BY FORWARDING BENEFIGIARY'S TIME DRAFT AND A COPY OF B/L TO THE REIMBURSING BANK +T/T REIMBURSEMENT NOT ALLOWED +ALL DOCUMENTS MUST BE FORWARDED IN TWO CONSECUTIVE LOTS BY INT'L COURIER SERVICE TO THE FOL- LOWINC ADDRESS: NATIONAL AGRICULTURAL COOPERATIVE FEDERATION INTERNATIONAL BANKING DEPARTMENT 75, 1- KA, CHUNGJEDNG-RD, JUNGKU, SEOUL, KOREA +THIS CREDIT IS SUBJECT TO UCP, ICC PUBLICATIONS NO. 600 (2007 REVISION) :72: SENDER TO RECEIVER INFORMATION TEST S70314 WITH HANIL BANK, SEOUL PLS CONTACT THEM FOR TESTKEY VERIFICATION +END OF MESSAGE + 33062 BOCSH A CN 12-MAY-2008 at 16: 56 from EXTEL 根据信用证内容回答下列问题
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一般情况下，链传动最好将紧边放在上方。
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如果某一行业的进入障碍很高，退出障碍很低，那么已在该行业的企业盈利水平（），风险（）。
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在多种利率并存的条件下起决定作用的利率是()。
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在HE切片上见到肺泡腔内有粉红色液体成分，可诊断为（）
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常用的掩蔽方法有配位掩蔽法，沉淀掩蔽法和氧化还原掩蔽法：（）