【单选题】请根据短文的内容,回答题。 Are You a Successful Leader? (1) Almost nothing we do in this world is done in isolation. At work or at play, you&39;ll find yourself in groups, working with other people: your team at w...
A.
Most of good leaders are natural-bom.
B.
It's important to have a good leader.
C.
People are in groups.
D.
These techniques are used to train leaders.
E.
Training can make good leaders.
F.
A good leader needs a variety of qualities. A good leader needs a variety of qualities.
【简答题】A box contains 100 items of which 4 are defective. Two items are chosen at ramdom from the box. What is the probability of selecting (1) 2 defectives if the first item is NOT replaced. (2) 2 defectiv...