The price of a stock is $64. A trader buys 1 put option contract on the stock with a strike price of $60 when the option price is $10. When does the trader make a profit?
A. When the stock price is below $60
B. When the stock price is below $64
C. When the stock price is below $54
D. When the stock price is below $50
查看答案
When the stock price increases with all else remaining the same, which of the following is true?
A. Both calls and puts increase in value
Both calls and puts decrease in value
Calls increase in value while puts decrease in value
D. Puts increase in value while calls decrease in value
When the strike price increases with all else remaining the same, which of the following is true?
A. Both calls and puts increase in value
Both calls and puts decrease in value
Calls increase in value while puts decrease in value
D. Puts increase in value while calls decrease in value
When volatility increases with all else remaining the same, which of the following is true?
A. Both calls and puts increase in value
Both calls and puts decrease in value
Calls increase in value while puts decrease in value
D. Puts increase in value while calls decrease in value
在共射放大电路中，当输入正弦波时，输出波形下半波失真，引起失真的原因是（ ）。
A. 静态工作点太低，ib的负半周进入截止区
B. 静态工作点太高，ib的正半周进入饱和区
C. 静态工作点合适，ib值过大
D. 静态工作点合适，ib值过小
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