卵巢恶性肿瘤的主要治疗手段是A．手术治疗B．手术+化疗+放疗C．手术+放疗D．化疗E．手术+免疫治疗

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By irrevocable letter of credit for 90% of the total invoice value of the goods to be shipped, in favor of the Sellers, payable at the issuing bank against the Sellers'draft at sight accompanied by the shipping documents stipulated in the Credit． The balance of 10% of the proceeds is to be paid only after the goods have been inspected and approved at the port of destination．

_____ the terms of payment as stipulated in the contract ，please establish an

irrevocable letter of credit in our favor.

A. In fact

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