已知F（x）=∫x1(2-1t)dt，(x＞0)则F′（x）=______．

2011年6月20日，上海华联皮革制品有限公司（SHANGHAI HUALIAN LEATHER GOODS CO., LTD. 156 CHANGXING ROAD, SHANGHAI, CHINA）向SVS DESIGN PLUS CO., LTD. 1-509 HANNAMDONG YOUNGSAN-KU, SEOUL, KOREA出口DOUBLE FACE SHEEPSKIN一批，达成以下主要合同条款：

1．Commodity: DOUBLE FACE SHEEPSKIN

COLOUR CHESTNUT

2． Quantity: 3175.25SQFT(平方英尺)

3． PACKING: IN CARTONS

4． Unit Price: USD7.40/SQFT CIF SEOUL

5． Amount: USD23496.85

6． Time of shipment: During NOV.2011

　Port of Loading: SHANGHAI, CHINA

　Port of Destination: SEOUL, KOREA

　Partial shipment: ALLOWED

　Transshipment: PROHIBITED

7． Insurance: TO BE COVERED BY THE SELLER FOR 110%INVOICE VALUE COVERING

　　　　　　ALL RISK AND WAR RISK AS PER CIC OF THE PICC DATED 01/01/1981.

8． Payment: BY IRREVOCABLE LETTER OF CREDIT AT 45 DAYS SIGHT TO REACH

　　　　　THE SELLER NOT LATER THAN JUNE 24, 2011, VALID FOR NEGOTIATION

　　　　　IN CHINA UNTIL THE 15TH DAY AFTER TIME OF SHIPMENT

Document: (1) SIGNED COMMERCIAL INVOICE IN 3 FOLD.

　　　　　(2) SIGNED PACKING LIST IN 3 FOLD.

　　　　　(3) FULL SET OF CLEAN ON BOARD OCEAN B/L IN 3/3ORIGINALS ISSUED

　　　　　　TO ORDER AND BLANK ENDORSED MARKED “FREIGHT PREPAID” AND

　　　　　 NOTIFY THE APPLICANYT.

　　　　　(4) CERTIFICATE OF ORIGIN IN 1 ORIGINAL AND 1 COPY ISSUED BY THE

　　　　　 CHAMBER OF COMMERCE IN CHINA

　　　　　(5)INSURANCE POLICY/CERTIFICATE IN DUPLICATE ENDORSED IN BLANK

　　　　　 FOR 110%INVOICE VALUE COVERING ALL RISK S AND WAR RISKS OF

　　　　　 CIC OF PICC (1/1/1981).SHOWING THE CLAIMING CURRENCY IS THE

　　　　　 SAME AS THE CURRENCY OF CREDIT

相关资料：

　　　　(1)信用证号码：MO722111057

　　　　(2)合同号码：HL20110315

SVS DESIGN PLUS CO., LTD 国际商务单证员金浩于2011年6月23日向KOOKMIN BANK, SEOUL, KOREA办理申请电开信用证手续，通知行是BANK OF CHINA, SHANGHAI BEANCH

IRREVOCABLE DOCUMENTARY CREDIT APPLICATION

TO: BANK OF CHINA Date: JUNE 25, 2011

慢性关节痛可见于（）。

A.风湿性关节炎

B.类风湿关节炎

C.结核性关节炎

D.肩周炎

E.系统性红斑狼疮

冠心病运动治疗的核心是（）

A.运动时间

B.运动强度

C.训练频率

D.运动方式

E.间歇运动

HTC G7俗称“金字塔”。