不是充分发挥宪法的作用必须具备的条件的是（）。
A.法治环境优良
B.宪法本身科学
C.宪法的充分实
D.实行三权分立
参考答案：D
—Sarah, you seem to be a little absent-minded. What’s wrong?
—Oh, sorry. Actually, I of the family party this weekend. I have to make a list of what needs to be bought.
A．am just thinking
B．just thought
C．have just thought
D．was just thinking
在设计汽轮机油主要油箱的容量时，其容量至少是流向轴承油封正常流量的（）倍。
A.8
B.5
C.3
D.7
