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对溶剂敏感的塑料制品，采用低级醇或挥发速度快的芳香族溶剂揩拭。( )

A. 对
B. 错

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静电喷涂室内的通风装置，应在操作前5min打开，在操作完毕立刻关闭。( )

A. 对
B. 错

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Questions 14—16 are based on the following conversation. Which of the following statements is true according to the speaker

A. Most people have dictionaries but don’t use them frequently.
B. Most people don’t have dictionaries but need them very often.
C. Most people have dictionaries and use them very often.
D. Most people don’t have dictionaries and seldom need them.

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You will hear 3 conversations or talks and you must answer the questions by choosing A, B, C or D. You will hear the recording ONLY ONCE. Questions 11—13 are based on the following conversation. What is the woman’s tone of voice when she first sees the man

A. Frustrated.
B. Relieved.
C. Sarcastic.
D. Apologetic.

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半机械法常用的工具有风砂轮、图纹粗锉、风动打锈锤及风动齿形旋转式除锈器。( )

A. 对
B. 错

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对溶剂敏感的塑料制品，采用低级醇或挥发速度快的芳香族溶剂揩拭。( )

A. 对 B. 错

静电喷涂室内的通风装置，应在操作前5min打开，在操作完毕立刻关闭。( )

Questions 14—16 are based on the following conversation. Which of the following statements is true according to the speaker

You will hear 3 conversations or talks and you must answer the questions by choosing A, B, C or D. You will hear the recording ONLY ONCE. Questions 11—13 are based on the following conversation. What is the woman’s tone of voice when she first sees the man

半机械法常用的工具有风砂轮、图纹粗锉、风动打锈锤及风动齿形旋转式除锈器。( )

A. 对
B. 错