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【判断题】
模式色散是因为在光纤中传送不同速率的光信号产生的波形展宽，对于单模光纤、多模光纤同样存在模式色散。A.
正确
B.
错误
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【单选题】With reference to our S/C No.PTS12 for 1,000 pieces of Men’s Shirts, which are from Ningbo to Sydney by S/S “China Star” tomorrow, we would like you to effect insurance.
A.
to ship
B.
to be shipping
C.
to be shipped
D.
to have shipped
【简答题】填入合适的介词(注意大小写) Dear Sirs, We acknowledge (1) ____ thanks the receipt of your letter dated March 11 th inquiring about the possibility of selling your men’s shirts, Tiantan Brand, in our market. (2)___...
【简答题】Our men’s shirts are packed _________ boxes _________ 1dozen each, 60 boxes _________a carton lined _______ waterproof paper.
【简答题】介词填空 Dear Sirs, We acknowledge(1) thanks the receipt of your letter dated March 11th enquiring about the possibility of selling your men’s shirts, Tiantan Brand, in our market. (2) reply, we wish to ...
【单选题】We confirm having accepted your order No. C109 for 1,400 "Hero" brand men’s shirts. You are kindly requested to open an irrevocable sight Letter of Credit in our favor __________(时间不晚于2019年5月5日).
A.
on May 5, 2019
B.
before May 5, 2019
C.
on or before May 5, 2019
D.
on and after May 5, 2019
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