控制柜内部由机器人系统所需部件和相关附件组成，包括主计算机、、轴计算机、安全面板、系统电源、配电板、电源模块、电容、接触器接口板、 等。
4.[音频]
A. Last week
B. Last month
C. This week
D. This month
5.
A. He spoke a lot of English.
B. He communicated happily with Jack.
C. He stood by listening, seldom spoke English.
D. He felt relaxed when listening to others talking in English.
6.
A. There are so many people at the corner.
B. His English is so poor, while others at the corner are good at English.
C. No matter how hard he works at English, there is no improvement.
D. Whenever he speaks English, he seems to make mistakes
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