A) It is important to quantify various concrete hazards.
B) Daily accidents pose a more serious threat to children.
C) Parents should be aware of children’s health hazards.
D) Attention should be paid to toxic chemical exposure.
第1题
系统保障风险的防范应从交易保障系统的条件、数量和质量等几个方面着手。()
A.正确
B.错误
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