During inspection of the machinery space, which of the following statements points to an unsatisfactory organization of the systematic maintenance?（）<br>A:missing valve hand wheels<br>B:dirty tank tops<br>C:a large number of temporary repairs<br>D:All of the above

During inspection of the machinery space, which of the following statements points to an unsatisfactory organization of the systematic maintenance?（）
A:missing valve hand wheels
B:dirty tank tops
C:a large number of temporary repairs
D:All of the above

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