【单选题】关于汇票的付款日期,票面上写明“at 90 days from sight",如果见票日是4月20日,则汇票到期日是:
【单选题】Which of the following is NOT true according to the passage?
A.
Shelly owned a snack shop.
B.
Shelly was a sleep walker.
C.
Shelly suffered from SRED
D.
Shelly is recovering now.
【判断题】T610 卧式镗床的钢球无级变速器达到极限位置,拖动变速器的电动机应当自动停车
【单选题】对滴有酚酞试液的下列溶液,操作后颜色变深的是 ( )
【单选题】下图为植物繁殖的几种方式,有关叙述错误的是:
【单选题】如果汇票上付款期限是:At 90 days from 20 th May该汇票的付款到期日是()。
【单选题】According to Scientist 2’s viewpoint, compared to thealtitude at which a stony asteroid would have explodedin Earth’s atmosphere, a comet of similar size wouldmost likely have exploded at:
C.
a slightly lower altitude.
D.
a much lower altitude.
【简答题】汇票的出票日期为7月19日,如果汇票付款期限为出票后3个月,此汇票到期_______________;如果汇票付款期限为出票后30天,则此汇票到期________________。
【单选题】下列关于鸟类的生殖与发育的叙述,错误的是
B.
求偶、交配、产卵、育雏是所有鸟类共有的繁殖行为
【简答题】A为重言式当且仅当A的主析取范式含全部 个( ), A为矛盾式当且仅当A的主析取范式为( )