凿是打眼、剔槽及在窄部分()的工具。
A、专用
B、使用
C、切割
D、作业
参考答案:C
电解水时,与电源正极相连的玻璃管里产生的气体能使______,是______气;与负极相连的玻璃管里产生的气体能在空气中______,产生______色火焰,是______气.它们的体积比为______,所包含的原子个数比为______.
________ restoration of ancient architecture, the Chinese government has invested a large sum of money
on it.[ ]
A. In case of
B. In favor of
C. In terms of
D. In honor of