【单选题】A deck beam does NOT ______.
A.
act as a beam to support vertical deck loads
B.
lessen the longitudinal stiffness of the vessel
C.
act as a tie to keep the sides of the ship in place
D.
act as a web to prevent plate wrinkling due to twisting action on the vessel
【单选题】晚清时期著名思想家康有为第一次接触西方文化的时间是()。
【简答题】排卵前,阴道上皮在 作用下, 细胞增生,逐渐演变为 与 细胞,使整个上皮的厚度增加。
【单选题】商品进货成本包括商品批发价格、采购费用、仓储运输费用等,它是商品定价的基础,也是定价的( )。
【简答题】商品进货成本包括商品批发价格、采购费用、( )等,它是商品定价的基础,也是定价的最低界限。
【简答题】翻译: This laser beam covers a very narrow range of frequencies.
【单选题】女,28岁,结婚2年未孕(不分居,未避孕),为了解卵巢功能,决定做阴道细胞学图片检查。医生考虑采样和分析结果时,下列哪项考虑不对()
D.
排卵前阴道细胞富含糖原,并被阴道杆菌分解而呈酸性
【单选题】The laser beam is so strong because ______.
A.
it is a highly intensified beam of light
B.
its strength is increased by the heat of the sun
C.
it can be connected to strong light sources
D.
it is a concentration of light from different sources