【简答题】246×45积的个位数字是______;147×27的积的个位数字是______.
【单选题】Task 2 Li Ming is calling Housekeeping Services. Listen to the conversation and choose the best answer to each of the following questions. 1. Why does Mr. Huang ask for another towel?
A.
Because the towel in his room is dirty.
B.
Because he can’t find his towel in his room.
C.
Because the towel in his room is damp.
D.
Because he has lost his own towel.
【简答题】豌豆子叶黄色(A)对绿色(a)为显性,种皮灰色(B)对白色(b)为显性,下图中甲、乙、丙、丁分别表示四株豌豆体细胞中染色体和基因组成,请据图回答: (1)若甲豌豆一个花粉母细胞减数分裂产生一个基因型为aB的花粉,则同时产生的另外三个花粉的基因型分别是_____________; (2)上述哪两株豌豆杂交,后代表现型的分离之比是3:1?_____________________; (3)现用上图甲、...
【简答题】企业资产负债率为60%,销售净利率为4%,总资产周转率为1.5次,计算企业的所有者权益报酬率是多少?
【简答题】公司本年度税后净利润为1350000,所有者权益总额为10000000,计算本年度所有者权益报酬率是多少?
【简答题】花粉母细胞所进行的分裂为 。 A .有丝分裂 B.减数分裂 C.无丝分裂 D.倍数分裂