第17题: [单项选择]要操纵副翼配平系统,电源有何要求? A. 至少一台发电机上线 B. 需要两台发电机上线或接通地面电源 C. 接通电瓶就可以 参考答案:C
第18题: [单项选择]步骤5 A. 用分离钳钳尖,在固定钳圈前方输精管最突出处刺入输精管前壁,张开分离钳,一次分开阴囊皮肤和输精管各层组织 B. 用分离钳的一叶刺入输精管前壁,顺时针旋转180度使钳尖向上,轻轻闭合钳尖夹住输精管,用固定钳夹住光裸的输精管,除去分离钳,提起输精管 C. 分离钳紧靠提出的输精管曲折部分穿过并与其成平行方向徐徐张开钳尖,游离1.5cm D. 三指法寻找并固定输精管,做精索套式封闭麻醉(0.1%利多卡因),以皮外固定钳固定输精管 E. 用1/3000新洁尔灭5ml做精囊灌注 参考答案:E
第23题: [单项选择]______ before we departed last weekend, we would have had a wonderful dinner party. A. Had they arrived B. Would they arrive C. Were they arriving D. Were they to arrive 参考答案:A 答案解析:本题测试虚拟语气省略if的倒装形式。根据后面的主句谓语would have had可知,本题是对过去事实的虚拟,故从句谓语形式应用had done的形式,故答案为A。