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Question 24 is based on the news report you have just heard.

After she started teaching English.
Before she left for New Zealand.
C. When she moved to New York city.
D. Once she began to live on her own.

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Question 25 is based on the news report you have just heard.

A. It has renewed her passion for life.
B. It has made her happy and energetic.
C. It has helped her make new friends.
D. It has enabled her to start a new career.

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液压缸是执行元件,是能量转换装置,将液压能转变为:

A. 机械能
B. 动能
C. 势能
D. 电能

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当工作行程较长时，常采用:

A. 单活塞杆缸
B. 双活塞杆缸
C. 柱塞缸
D. 摆动缸

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单杆活塞缸采用差动连接方式快速运动时,其有效工作面积为:

A. 活塞面积
B. 无杆腔杆面积
C. 活塞杆面积
D. 缸筒面积

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Question 24 is based on the news report you have just heard.

After she started teaching English. Before she left for New Zealand. C. When she moved to New York city. D. Once she began to live on her own.

Question 25 is based on the news report you have just heard.

液压缸是执行元件,是能量转换装置,将液压能转变为:

当工作行程较长时，常采用:

单杆活塞缸采用差动连接方式快速运动时,其有效工作面积为:

After she started teaching English.
Before she left for New Zealand.
C. When she moved to New York city.
D. Once she began to live on her own.