【单选题】生产中主要根据蛋鸡外貌和生理特征选择产蛋性能,高产蛋鸡( )。
【单选题】在分时操作系统中,()是衡量一个分时系统的一项重要指标。
【单选题】柱模板底部的清理孔,沿高度大约每隔()开有一个浇筑孔。
【单选题】Which one of the following statements about complying presentation is correct? ( )
A.
When an issuing bank determines that a presentation does not comply, it may, with the agreement from the negotiating bank, approach the applicant for a waiver of the discrepancies.
B.
When an issuing bank determines that a presentation is complying, it may in its sole judgement, decide whether or not to honour.
C.
Banks may refuse to honour or negotiate discrepant documents.
D.
Notice of refusal must be given to presenter no later than close of the tenth banking day following the day of presentation.
【判断题】安全气囊按点火类型可分为 单级点火和多级点火
【简答题】A written permission.which is granted by the customs authorities when a vessel with exports is able to leave the port,is called( ).
【判断题】在已有的曲面进行【插入节点】操作,控制点分布将不会保持均匀( )。