题目内容

ZD6系列电动转辙机减速器摩擦带与内齿轮伸出部分,应注油保持润滑,不得锈蚀。()

A. 正确
B. 错误

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Evaluate this SQL statement: SELECT e.emp_name, d.dept_name FROM employees e JOIN departments d USING (department_id) WHERE d.department_id NOT IN (10,40) ORSER BY dept_name; The statement fails when executed. Which change fixes the error?()

A. remove the ORDER BY clause
B. remove the table alias prefix from the WHERE clause
C. remove the table alias from the SELECT clause
D. prefix the column in the USING clause with the table alias
E. prefix the column in the ORDER BY clause with the table alias
F. replace the condition "d.department_id NOT IN (10,40)" in the WHERE clause with "d.department_id <> 10 AND d.department_id <> 40"

坑种洋芋栽培技术的适期播种有哪些注意事项?

社会目标模式的目标在于通过小组经验来治疗个人心理、社会和文化的适应不良问题。

A. 正确
B. 错误

群体行为的特征?

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