【单选题】设某次考试的学生成绩服从正态分布,从中随机的抽取36位考生的成绩,算得平均成绩为66.5,标准差为15分.问在显著水平【图片】下,要检验这次考试全体考生的平均成绩是否为70,可以采用双边检验【图片】【图片】原假设的拒绝域为( )
【单选题】Calmodulin is a member of a family of Ca 2+ -binding proteins that also includes troponin, which triggers skeletal muscle contraction in response to increased [Ca 2+ ]. Members of this family share a ...
【单选题】接受承运人委托,代办与船舶有关的一切业务的是( )。
【单选题】马太效应:任何个人、群体或地区,一旦在某方面(如金钱、名誉、地位等)获得成功和进步,就会产生一种积累优势,就会有更多的机会取得更大的成功和进步。根据上述定义,下列不属于马太效应的是:
A.
教授、专家越是有名,得到的科研经费越多,社会兼职越多
B.
国家总是重点投资建设名校,那些投入充分而硬件和软件占绝对优势的学校想不继续成为名校恐怕都很困难
C.
在股市狂潮中,赚的总是庄家,赔的总是散户,普通大众的金钱,就会通过这种形式聚集到少数人手中
D.
陈经理喜欢买股票,最近他连买连中,买了新车,邻居羡慕之余纷纷向他讨教选号的方法
【单选题】接受承运人委托,代办与船舶有关的一切业务的人称为:
【单选题】Moving down the experience curve:
A.
increases the cost of a firm's raw material.
B.
allows a firm to reduce its cost of creating value.
C.
decreases a firm's profitability.
D.
increases the R & D expenditure of a firm.
【单选题】The derrick to be laid down on deck,cargo blocks,span tackles,guide rollers and all moving parts of derrick to be dismantled,cleaned and greased with special grease.This sentence is most possibly foun...
A.
Chief Mate's remark on stowage plan
B.
Store list made by Chief Engineer
C.
Collision Report made by Master
【单选题】The researchers plan to make WL-16 capable of ______
A.
moving up and down the stairs easily.
B.
turning its head easily.
C.
using a telescope to find the way.
D.
carrying a person of over 60 kilograms.
【判断题】船务代理是指接受承运人的委托,代办与船舶有关的一切业务的人。( )
【判断题】甲氧苄啶可逆性抑制二氢叶酸还原酶,与磺胺类合用,使细菌的代谢受到双重阻断。