题目内容

文明施工要求在电梯井口设置定型化、工具化、标准化的防护门，在电梯井内每隔（）层设置一道安全平网。

A. 2
B. 3
C. 4
D. 5

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A customer indicates that a system is experiencing printing problems. After checking the system, and successfully printing, no problem has been found. Which of the following procedures should be performed next to further clarify the problem?（）

A. Reboot the system.
B. Check the file system sizes.
C. Have the customer repeat the task to recreate the problem.
D. Inform the customer that no problems were found， and to call back if the problem reoccurs.

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文明施工要求在电梯井口设置定型化、工具化、标准化的防护门，在电梯井内每隔（）层设置一道安全平网。

A. 2 B. 3 C. 4 D. 5

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A customer indicates that a system is experiencing printing problems. After checking the system, and successfully printing, no problem has been found. Which of the following procedures should be performed next to further clarify the problem?（）

A. 2
B. 3
C. 4
D. 5