Master gasoline, kerosene, and diesel
Hazardous Materials, Hei
Organize the permitted materials down to the key numbers.
Repeat 250 questions on Hei-class materials, combustion, extinguishing, and regulations, then take a 25-question mock.
250 original questionsFocused Hei-class scope12- and 25-question mocks
250 questions
3-MINUTE CHECK
Try three questions.
Can you recall the reason?
The mini diagnostic is in Japanese, with a short explanation after each answer. No sign-up is required.
QUESTION 1 / 3
ガソリンの類別はどれか。
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