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【单选题】
thresholdA.
阈值
B.
增量,增加
C.
过量程
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皮皮学刷刷变学霸
举一反三
【简答题】Wild winds were sweeping through the area at extreme _____,destroying houses and erasing any landmark in their way.
【单选题】关于回火索氏体和索氏体的比较错误的是（ ）。
A.
回火索氏体的强度、塑性和韧性均好于索氏体
B.
回火索氏体中的渗碳体为片状，而索氏体中的渗碳体为粒状
C.
回火索氏体是调质处理的结果
D.
索氏体是正火处理的结果
【简答题】索氏体的符号为 [填空(1)]A. S
【简答题】The rules were s______ designed to protect wild animals.
【单选题】Between 1638 and 1650 hours this day，strong gusty winds were ______ by my vessel，in consequence of which，the vessel's four mooring lines were broken and her portside gangway severely damaged．
A.
gone
B.
done
C.
had
D.
experienced