蓄电池电机车的电源装置的防爆性能分为增安型、()和防爆特殊性三种。
A、本安型
B、充砂型
C、隔爆型
参考答案:C
六.单词(11)
1. ___由于…而呆住 2. __和…相关,和…有联系
3. ___以…为食,吃 4. _有意义;有道理,讲得通
5. ___充分利用 6. ___忍不住(做某事)
7. There are 30 persons injured in the road accident, the driver ___________(包括).
8. The ________(侵略) of the Japanese enemies brought great harm to our country.
9. At the border you will be asked your ____(目的地) and how long you plan to stay.
10. We passed through several__________(被离弃的) villages where local people had left already.
11. They sat at the back of the room, talking in __________(低语).
一条人行道路面,长27米,宽1.8米,用边长3分米的正方形地砖铺路,至少需要多少块这样的地砖?