熔断器是最简单和最早采用的一种()电器,并兼有()的作用。
参考答案:保护;开关
熔断器是最简单和最早采用的一种()电器,并兼有()的作用。
参考答案:保护;开关
完形填空 | |||
I first saw the baby panda when she was only 10 days old. She looked | |||
( ) 1. A. made ( ) 2. A. quite ( ) 3. A. leaves ( ) 4. A. strange ( ) 5. A. though ( ) 6. A. Luckily ( ) 7. A. examples ( ) 8. A. cut down ( ) 9. A. money ( ) 10.A. nothing | B. called B. mostly B. vegetables B. weak B. until B. Suddenly B. questions B. plant B. help B. everything | C. told C. just C. trees C. famous C. because C. Sadly C. matters C. protect C. clothes C. anything | D. kept D. hardly D. chips D. healthy D. whether D. Especially D. problems D. water D. family D. something |