车辆配置的干粉灭火器适用于扑救（）火灾。A、固体.液体B、电气C_爱下问搜题

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问题单项选择题

车辆配置的干粉灭火器适用于扑救（）火灾。

A、固体.液体

B、电气

C、金属

D、固体.液体.气体.电气

答案

参考答案：D

单项选择题

关于全口义齿排牙的原则下列哪项不正确（）

A.前牙排成浅覆盖、浅覆

B.人工牙的排列要处在肌肉平衡位置

C.牙列弧度要与颌弓型协调一致

D.后牙的支持尖必须排在牙槽嵴顶上

E.平面的高度应位于舌侧外缘最突出或略低

完形填空

阅读下列短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项。
A group of frogs was traveling through the woods and two of them fell into a pit(坑). All the other frogs gathered around it and watched as the two frogs tried to jump out. The pit was very deep and it looked as if there was no way      , so they started yelling at the two frogs to       . "The pit is too deep. You will die," they said together. When the       frogs kept trying, the crowd yelled      . After a while, one of the frogs believed what the others were saying, and fell down and      .
But      , the second frog kept jumping hard       the negative remarks of those that kept yelling at her to accept the       and just die. Finally, with one big leap, she       it out of the pit!
In fact, the second frog was       and unable to hear what the others had been saying. She thought they had been       her on the entire time they were yelling! What she had       considered as encouragement       her to try harder and succeed. And that made all the      !
With a positive       and being deaf to others' opinions, the second frog reached her goals by using such       as encouragement, instead of being       by others like the first frog, who failed to develop her       to struggle for survival.      , when we overcome others' criticism or       comments, we can do anything we set our minds to, just as the second frog did.

B．disappointingly

C．undoubtedly

C．achievement

A．possibility

C．discouraging