3.在△ABC和△A′B′C′中,如果AB=C′A′,BC=A′B′,CA=B′C′,那么可得结论( )
| A. | △ABC≌△A′B′C′ | B. | △ABC≌△C′A′B′ | ||
| C. | △ABC≌△C′B′A′ | D. | 这两个三角形不全等 |
2.下列数中,既是分数,又是正数的是( )
0 308476 308484 308490 308494 308500 308502 308506 308512 308514 308520 308526 308530 308532 308536 308542 308544 308550 308554 308556 308560 308562 308566 308568 308570 308571 308572 308574 308575 308576 308578 308580 308584 308586 308590 308592 308596 308602 308604 308610 308614 308616 308620 308626 308632 308634 308640 308644 308646 308652 308656 308662 308670 366461
| A. | +3 | B. | -2$\frac{1}{4}$ | C. | 0 | D. | 2$\frac{3}{10}$ |