原放大电路尚未出现失真，但随着工作温度的升高，可能会出现_________。
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当温度发生变化时，三极管的电流及参数将保持不变。（）
A. 对
B. 错
放大电路的静态工作点不稳定，还会使电路的动态参数不稳定。（）
A. 对
B. 错
The "lemons problem" exists because of
A. transactions costs.
B. economies of scale.
C. rational expectations.
D. asymmetric information.
Debt contracts
A. are agreements by the borrowers to pay the lenders fixed dollar amounts at periodic intervals.
B. have a higher cost of state verification than equity contracts.
C. are used less frequently to raise capital than are equity contracts.
D. never result in a loss for the lender.
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