Which of the precautions listed should be observed when taking on diesel fuel?（）<br>A:Secure all lighting to the main deck<br>B:Provide a portable fan to blow away fumes<br>C:Prohibit smoking in the area<br>D:Display a black triangle during daylight hours

Which of the precautions listed should be observed when taking on diesel fuel?（）
A:Secure all lighting to the main deck
B:Provide a portable fan to blow away fumes
C:Prohibit smoking in the area
D:Display a black triangle during daylight hours

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