13. A company sold a machine that originally cost 350,000 dollars for 130,000 dollars when accumulated depreciation on the machine was 200,000 dollars. The gain or loss recorded on the sale of this machine is ( ) A: $0<br/>gain or loss. B: $130,000<br/>gain. C: $20,000<br/>loss. D: $20,000<br/>gain.

What does “Less pain, more gain” mean? A: Big profit comes from small expenses. B: No pay no gain. C: Do as Romans. D: Borrow the chicken to lay the eggs.

The<br/>common-base amplifier has _()()()__. A: voltage gain, current gain, and power gain B: voltage gain and power gain, but no current gain C: current gain and power gain, but no voltage gain D: current gain and voltage gain, but no power gain

The common mode rejection ratio (CMRR) is the ratio of _______. A: the difference mode gain to the common mode gain B: the common mode gain to the difference mode gain C: noninverting gain to inverting gain D: inverting gain to noninverting gain

It’s unhealthy for girls to ________ to try to stop this normal weight gain.

3. The common mode rejection ratio (CMRR) is the ratio of ________. A) the difference mode gain to the common mode gain B) the common mode gain to the difference mode gain C) noninverting gain to inverting gain D) inverting gain to noninverting gain A: This is the right answer. B: wrong. C: wrong. D: wrong.

The leading group of three continue to the rest of the runners and were soon half a mile clear of them. A: gain ove B: gain around C: gain on D: gain in

得人心者得天下 Those who gain _____ among the people will gain the power.

The major osmoregulatory problems of saltwater fishes are ( ). A: water gain and salt loss B: water loss and salt gain C: water gain and salt gain D: water loss and salt loss E: nonexistent because freshwater fishes are isosmotic to their environment

根据英语释义写出英语单词：gain knowledge or learn a skill; get or gain sth.