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Translate the following into Chinese. (1)Details You are requested to check the contents of the Invitation to(2)package for completeness when you receive it and then return the enclosed(3)Acknowledgment. (4)shall be submitted in accordance with the Instructions to(5)and Form of(6)．Any deviation from the requirements of these instructions may render your(7)invalid. Your(8)must be received no later than 12: 00 o'clock on Friday, 3rd July, 2009(closing date)at the office of the Purchaser in Shenzhen, People's Republic of China. (9)shall be forwarded by courier service or delivered safe-hand, sealed and clearly addressed and marked on the outside in accordance with the Instructions to(10). Please note that uninvited visits to our offices to discuss the Invitation to(11)are not acceptable and that all contact shall be in writing(by letter or fax)as set out in the Instructions to(12). The(13)shall consider this Letter of Invitation and the enclosed Invitation to(14)documents to be confidential, and the contents shall not be divulged to any person or persons not directly concerned with the preparation of the(15). This Invitation to(16)is subject to your signing and returning to the Purchaser the(17)Acknowledgment contained within Section A.
套管式或铰链式活塞冷却机构常用于（）。
下列有关两性离子表面活性剂叙述，错误的是（）
锰硅钢制的保险箱
当超声束从一介质传到另一个弹性和密度都不同于前者的介质时，声束方向将发生变化。该变化称为（）。
在国际航空货物运输中，操作代码PER的中文全称是（）。
关于斑块哪一项是错误的（）
设备采购合同价款的支付一般分三次，其中设备制造前，采购方支付设备价格的()%作为预付款。P200
患者，男性，62岁，因突发性意识障碍伴恶心呕吐3h入院。入院时检查：神志浅昏迷，双侧瞳孔等大等圆，对光反应存在，痛刺激无睁眼，四肢可见屈曲。颈项有强直，克氏征阳性。头颅CT检查示蛛网膜下腔出血，左侧额叶底面和前纵裂有血肿，脑室有较多的出血。根据以上病史和检查，Hunt-Hess分级是（）
砌筑桥台时，先砌（）。