烧结用燃料质量要求。_爱下问搜题

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问题问答题简答题

烧结用燃料质量要求。

答案

参考答案：

固定碳含量高，灰分、挥发分、硫含量要低。

完形填空

完形填空。

Last week, we 1 ten students 2 No. 3 Middle School what they 3 last weekend. 4 most kids, the
weekend was fun. Ten kids did 5 or 6 . On Saturday afternoon, five kids went 7 , and three went to the
library. Two kids also played computer 8 . On Saturday evening, seven kids watched a movie or 9 at home
and watched TV. On Sunday, two kids visited friends, nine kids cleaned 10 rooms, and five played sports.

( ) 1. A. asked
(    ) 2. A. in
( ) 3. A. doing
(   ) 4. A. On
(    ) 5. A. many homework
(   ) 6. A. study
(    ) 7. A. shoping
( ) 8. A. game
(   ) 9. A. stays
(    ) 10. A. there

B. asking
B. at
B. does
B. In
B. houseworks
B. studied
B. shop
B. games
B. staying
B. his

C. ask
C. for
C. did
C. To
C. homeworks
C. studying
C. shopping
C. gameing
C. to stay
C. her

D. asks
D. of
D. do
D. For
D. homework
D. to study
D. shops
D. gaming
D. stayed
D. their

实验题

有一待测电阻R_x，无法估计其粗略值。某同学应用伏安法进行测量，按下图所示（甲）、（乙）两种电路各测一次，用（甲）图测得的数据是2.9V，4.0mA；用（乙）图测得的数据是3.0V，3.0mA。由此可知，应用________图测量的值误差较小，测量值R_x＝________。