【单选题】文件 AAA.EXE 是一个______。
【单选题】使用液压拉伸器应按说明书规定的油压泵油,任何情况下均不得超过规定油压的()和螺栓的()。
【简答题】___是一种在小区域内使用的由多台计算机组成的网络。 A、局域网 B、区域网 C、远程网 D、广域网
【单选题】It is better to ask someone for advice rather than ___________something.
【简答题】柠檬酸-丙酮酸循环(citrate pyruvate cycle)
【单选题】A risk taker is someone who ______.
A.
doesn't care what happens to him
C.
likes doing dangerous activities
【单选题】Someone who is risk-averse is:
A.
willing to expend whatever resources necessary to gain an uncertain amount of money.
B.
willing to spend more resources to avoid losing a given sum of money than to gain the same sum of money.
C.
irrational in the need to hold all assets in liquid form.
D.
one who does not believe in financial risk.
【简答题】在平面直角坐标系xOy中,设D是由不等式组 表示的区域,E是到原点的距离不大于1的点构成的区域,向E中随机投一点,则所投点落在D中的概率是____.
【单选题】柠檬酸合酶( Citrate synthase)催化:乙酰CoA+草酰乙酸→柠檬酸。根据国际系统 分类法,该酶应该属于第()大类酶