以下是现代效用理论创始人的是（）。 ["冯·诺依曼","弗里德曼","克林顿","德布勒"]
望远镜产生视差的原因是什么？
糖尿病预防与健康管理的关键内容不包括（） ["合理的营养与膳食指导","减肥、维持适当的体重","禁欲","增加体力活动及运动"]
陈述的主要内容包括（）。 ["重要事实","事实","想法","期望"]
Master must ascertain that deck loads are stowed in such a manner as（）. ["not to affect the vessel's stability and trim","to affect the vessel's stability","to affect the vessel's trim","to affect the vessel's atability or trim"]
什么是重介质悬浮液固体容积浓度？常用浓度多少合适？
