What was his first reflection when he stood at the corner?
A.There was a terrible accident in which an airliner struck the first building.
B.A terrorist attack against America had begun.
C.People were floating down from the top of the building as if they wanted to break a world record.
D.He was just at a loss and could not make out what had happened.
第1題
GB/T213規定,熱量計氧彈應定期進行不小于()MPa的水壓試驗。每次水壓試驗后氧彈的使用時間一般()年;壓力表每()年應經計量部門檢定一次。
第3題
A.4,1,1
B. 4,2,0.5
C. 20,1,1
D. 20,2,2
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