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【简答题】
齐次线性方程组 有非零解的充要条件为系数矩阵的行列式 零 。(填“等于”或“不等于”)
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举一反三
【简答题】信用证条款如下： DOCUMENTS REQUIRED：GENERALIZED SYSTEM OF PREFERENCES CERTIFICATE OF ORIGIN(FORM. A)ISSUED BY AUTHORIZED ORGANIZATION IN CHINA 信用证未对普惠制产地证的出具人做任何其他规定。 普惠制产地证的出具人应该为：___________________
【单选题】信用证条款:DOCUMENTS REQUIRED:INSURANCE CERTIFICATE COVERING OCEAN TRANSPORTATION ALL RISKS AS PER INSTITUTE CARGO CLAUSES IRRESPECTIVE OF PERCENTAGE FOR110PCT OF INVOICE WITH CLAIMS PAYABLE AT NEW YORK。 信...
A.
COVERING OCEAN TRANSPORTATION ALL RISKS AS PER INSITIUTE CARGO CLAUSES,INCLUDING I.O.P。
B.
COVERING OCEAN TRANSPORTATION ALL RISKS AS PER INSITIUTE CARGO CLAUSES IRRESPECTIVE OF PERCENTAGE,SUBJECT TO 5PCT FRANCHIES。
C.
COVERING OCEAN TRANSPORTATION ALL RISKS AS PER INSITIUTE CARGO CLAUSES,INCLUDING I.O.P.,SUBJECT TO USD1,000.00 EXCESS DEDUCTIONS。
D.
COVERING OCEAN TRANSPORTATION ALL RISKS AS PER INSITIUTE CARGO CLAUSES,EXCLUDING IRRESPECTIVE OF PERCENTAGE。
【多选题】关于放射防护,下列哪种说法是正确的是 。
A.
主动防护的目的是尽量减少 X 线的发射剂量
B.
使用原子序数较高的物质材料阻挡 X 线属于屏蔽防护
C.
限制照射范围,减少辐射量
D.
原发射线比继发射线的能量大,对放射工作者的影响也大
【单选题】信用证条款: DOCUMENTS REQUIRED: INSURANCE CERTIFICATE COVERING OCEAN TRANSPORTATION ALL RISKS AS PER INSTITUTE CARGO CLAUSES IRRESPECTIVE OF PERCENTAGE FOR 100% OF INVOICE WITH CLAIMS PAYABLE AT NEW YORK. ...
A.
COVERING OCEAN TRANSPORTATION ALL RISKS AS PER INSITIUTE CAEGO CLAUSES,INCDUDING I. O. P.
B.
COVERING OCEAN TRANSPORTATION ALL RISKS AS PER INSTIUTE CARGO CLAUSES IRRESPECTIVE OF PERCENTAGE, SURJECT TO 5PCT FRANCHISE.
C.
COVERING OCEAN TRANSPORTATION ALL RISKS AS PER INSITIUTE CARGO CLAUSES, INCLUDING I. O. P. SUBJECT TO USD1,000.00 EXCESS DEDUCTIONS.
D.
COVERING OCEAN TRANSPORTATON ALL RSKS AS PER INSTITUTE CARGO CLAUSES, EXCLUDING IRRESPECTIVE OF PERCENTAG
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