Organize all six classes together
Hazardous Materials, Kou
Learn the differences by comparing each class.
Study regulations, physics and chemistry, and material properties, then measure total readiness in the 45-question exam format.
450 original questionsAll six classes22- and 45-question mocks
450 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
第1類（酸化性固体）の性質として正しいものはどれか。
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