【单选题】Visual piloting requires bearings from at least ______objects; radar, with its ability to determine both bearing and range from ______ object, allows the navigator to obtain a fix where only a single ...
【多选题】对于植物缺铜与铜中毒的症状,描述正确的是()?
A.
当作物体铜的含量小于 4mg/kg 时,就有可能缺铜
C.
当作物体铜的含量高于 10mg/kg 时,就可能中毒
【单选题】关于握手的顺序礼仪,描述不正确的有:
A.
男士与女士握手,男士应该在女士伸手之后再伸手
B.
客人到来之时,应该主人先伸手;客人离开时,客人先握手。
【简答题】在可能缺铜的地区,不宜过多使用含 [填空(1)] 的添加剂喂绵羊和牛A. [填空(1)答案]铁
【单选题】Is the ship using the maximum lighting available while underway,consistent with safe navigation?
A.
The speaker wants to know when the maximum lighting is used on board
B.
The speaker wants to know where the navigation lights are
C.
The speaker wants to know how to use the maximum lighting
D.
The speaker wants to know whether the ship uses the maximum lighting available while underway
【单选题】铜是“心脏卫士”,缺铜会引起冠心病,这里的铜指( )
【单选题】关于握手的顺序礼仪,描述不正确的有:
B.
客人到来之时,应该主人先伸手;客人离开时,客人先握手
D.
男士与女士握手,男士应该在女士伸手之后再伸手
【单选题】关于握手的顺序礼仪,描述不正确的有
B.
男士与女士握手,男士应该在女士伸手之后再伸手
C.
客人到来之时,应该主人先伸手;客人离开时,客人先握手