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【单选题】
关于普通螺栓连接和铰制螺栓连接,下列说法错误的是()A.
普通螺栓连接的被连接件上开通，螺栓与壁之间留有间隙
B.
铰制螺栓对的加工精度要求高
C.
铰制螺栓连接时，外径与被连接件上的内径多采用基制过渡配合
D.
这两种连接在被连接件的需要加工内螺纹
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【简答题】A pre-advice credit is an irrevocable undertaking. (1)( ) To be irrevocable, operative credit must be issued. (2)( ) True. (3)( ) False. (4)( ) Pre-advice is not acceptable in UCP.
【单选题】From Mr. Davis's introduction, we know that ____.
A.
a weak grip shows that you are shy
B.
a firm handshake shows that you are confident
C.
holding hands in public is impolite
【简答题】I. Introduction Knowing _________________________ 1 is the most important in presenting products.
【简答题】Irrevocable L/C
【简答题】Irrevocable Letter of Credit
【简答题】Our terms of payment are by irrevocable L/C payable by sight draft against presentation of shipping document.
【简答题】After the competition，please follow instructions for exiting the venue in an orderly fashion.
【简答题】irrevocable credit
【简答题】IRREVOCABLE LETTER OF CREDIT
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