单选题12月22日到3月21日,太阳赤纬为(),并且逐渐()。A南;增大B北;增大C北;减少D南;减小
单选题
12月22日到3月21日,太阳赤纬为(),并且逐渐()。
A
南;增大
B
北;增大
C
北;减少
D
南;减小
参考解析
解析:
暂无解析
相关考题:
单选题下列关于木材甲板货的定义及其海运特性,表述正确的是:()A木材甲板货包括胶合板、木质纸浆B木材甲板货积载因数较大,极易吸收水分和散失水分C木材甲板货积载因数较小,所以通常按照所运货物的吨数收取运费D木材甲板货因表面常有衍生物,会使封闭舱内产生一氧化碳等有毒气体
单选题在IMO采纳的分道通航水域,帆船与L<20米的船舶,不应妨碍下列哪些按通航分道行驶的船舶?()A除从事捕鱼船之外的任何船长大于等于20米的用机器推进的船舶B用机器推进的任何船舶C任何可用机器推进的船舶D任何船长大于20米的用机器推进的船舶
单选题根据《运输船舶消防管理规定》,下列叙述哪些正确?()I、在禁烟处所设立明显的禁烟标志;II、客船发生火灾,应首先疏散旅客;III、在港船舶发生火灾时由海事部门负责总指挥;IV、在港船舶发生火灾时由船长负责灭火指挥AI~IVBII~IVCI~IIIDI、II、IV
单选题船舶靠泊时,尾部出缆先后顺序,视具体条件而定:().A船舶空载,吹开风强时,宜先带尾横缆,然后带尾倒缆及尾缆B船舶重载、顶流较强时,应先带尾缆,然后带横缆及尾倒缆C船舶空载,吹开风强时,宜先带尾缆,然后带尾倒缆及尾横缆D船舶重载、顶流较强时,应先带尾横缆,然后带尾缆及尾倒缆
单选题A charge of fresh air is drawn into the engine cylinder and then () by the moving piston() very high pressure.Apressed;toBpressurized;withCpushed;inDcompressed;to
单选题A gnomonic projection is based on a(n)().Aplane tangent at one pointBcylinder tangent at the equatorCcone tangent at one parallelDinfinite series of cones tangent at selected parallels
单选题由示功器测得柴油机某缸示功图面积为250mm2,示功图长度L=60mm,示功器弹簧比例m=4mm/MPa,该缸的平均指示压力为()。A2.08MPaB1.04MPaC1.40MPaD1.80MPa
单选题Which statement is true concerning a vessel equipped with operational radar?().AThe Master of the vessel must be on the bridge when the radar is in useBThe radar equipment is only required to be used in restricted visibilityCThe use of a radar excuses a vessel from the need of a look-outDThis equipment must be used to obtain early warning of risk of collision
单选题Your vessel is equipped with totally enclosed lifeboats. Which statement is true when the boat is enveloped in flames?().AThe ventilators will automatically close by the action of fusible linksBThe motor takes its air supply from outside the lifeboat to prevent asphyxiation of the crewCA water spray system to cool the outside of the boat is operated by a high-volume manual pumpDAn air tank will provide about ten minutes of air for the survivors and the engine
单选题关于中高速柴油机缸套外圆表面的腐蚀,下列说法正确的是()。A是穴蚀作用的结果B是电化学作用的结果C是穴蚀和电化学共同作用的结果D以上说法均不对