应维持正氮平衡的人群有( )。

A．儿童

B．孕妇

C．疾病恢复期

D．饥饿

E．老年人

阅读以下信用证，做选择填空。
(1)信用证内容
27: SEQUENCE OF TOTAL 1/1
40A: FORM OF DOCUMENTARY CREDIT IRREVOCABLE
20: DOCUMENTARY CREDIT NUMBER CRED1785669
31C: DATE OF ISSUE 090906
40E: APPLICABLE RULES UCP LATEST VERSION
31D: DATE AND PLACE OF EXPIRY 091102 U.S.A.
50: APPLICANT SILKROAD TEXTILES CO., LTD.
554E 8TH STREET A682
LOS ANGELES
U.S.A.
59: BENEFICIARY MEIYIJIA FABRIC CO., LTD.
150 RENMING ROAD
DALIAN 116002 CHINA
32B: CURRENCY CODE, AMOUNT: USD 76670
39A: PRECENTAGE CREDIT AMOUNT TOLERANCE 10/10
41A: AVAIIABLE WITH. BY. CITIU$33
42P: DEFERRED PAYMENT DETAILS AT 60 DAYS AFTER SIGHT C/O OUR COUNTERS
43P: PARTIAL SHIPMENTSNOT ALLOWED
43T: TRANSSHIPMENT NOT ALLOWED
44E: PORT OF LOADING/AIRPORT OF DEPARTURE DALIAN PORT, CHINA
44F: PORT OF DISCHARCE/AIRPORT OF DESTINATION LONG BEACH PORT, U.S.A.
44C: LATEST DATE OF SHIPMENT091017
45A: DESCRIPTION OF GOODS AND/OR SERVICES
+TRADE TERMS: CIF LONG BEACH PORT, U.S.A. ORIGIN: CHINA
+82000M of 100% POLYESTER WOVEN DYED FABRIC
AT USD 0.85 PER M
WIDTH: 150CM₁＞180CM₂
46A: DOCUMENTS REQUIRED
+SIGNED COMMERCIAL INVOICE THREE FOLD
+FULL SET OF CLEAN ON BOARD OCEAN BILL OF LADING MADE OUT TO THE ORDER AND BLANK ENDORSED, NOTIFY: APPLICANT(FULL ADDRESS)MARKEDFREIGHT PREPAID
+SIGNED DETAILED PACKING LIST
+CERTIFICATE OF ORIGIN
+HANDSIGNED INSURANCE POLICY/CERTIFICATE COVERING ALL RISKS AS PER I.C.C. FOR 110 PCT OF THE INVOICE AMOUNT
47A: ADDITIONAL CONDITION
10PCT MORE OR LESS IN AMOUNT AND QUANTITY ALLOWED
71B: CHARGES ALL CHARGES AND COMMISSIONS OUTSIDE U.S.A. ARE
FOR BENEFICIARY’S ACCOUNT
48: PERIOD FOR PRESENTATION WITHIN 15 DAYS
49: CONFIRMATION INSTRUCTIONS WITHOUT
78: INSTRUCTIONS TO THE PAYING/ACCEPTING/NEGOTIATING BANK AT MATURITY DATE, UPON RECEIPT OF COMPLYING DOCUMENTS C/O OURSELVES, WE WILLCOVER THE REMITTING BANK AS PER THEIR INSTRUCTIONS
(2)根据信用证内容回答下列问题：

按照信用证的规定，受益人可以在( )装运。

A．2009-10-16

B．2009-10-18

C．2009-10-20