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【判断题】
T8钢与20MnVB相比,淬硬性和淬透性都较低。A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】People never __________ his sincerity as a public servant; for he had long devoted himself to the struggle for the independence of his nation.
A.
suspected
B.
doubted
【单选题】People never ______ his sincerity as a public servant; for he had long devoted himself to the struggle for the independence of his nation.
A.
doubted
B.
suspected
C.
thought
D.
uncertain
【单选题】The peptide alanylglutamylglycylalanylleucine has:
A.
a disulfide bridge.
B.
five peptide bonds.
C.
four peptide bonds.
D.
no free carboxyl group.
E.
two free amino groups.
【简答题】（16分）实验室制配0.5 mol/L的NaOH溶液500 mL，完成下列实验并回答问题。（每空2分） ⑴配制时，一般可分为以下几个步骤，请填空： ①计算：计算实验需要的NaOH固体质量为 g； ②称量：用小烧杯和托盘天平迅速准确称量所需的NaOH固体 ③溶解：往装有NaOH的小烧杯中加入适量的水溶解,冷却至室温 ④转移：将上述冷却后的溶液转入500mL的容量瓶 ⑤洗涤：用蒸馏水洗涤小烧杯和玻璃棒...
【简答题】(suspect doubt) People never ______ his sincerity as a public servant; for he had long devoted himself to the struggle for the independence of his nation,
【简答题】signal peptide
【单选题】《游山西村》一诗中具有哲理意味的名句是
A.
从今若许闲乘月，拄杖无时夜叩门
B.
箫鼓追随春社近，衣冠简朴古风存
C.
莫笑农家腊酒浑，丰年留客足鸡豚
D.
山重水复疑无路，柳暗花明又一村
【简答题】Brain Wood watched his financial life ______ (螺旋形上升,不断地增长) downward just when he thought he had overcome the obstacles which had been dominating his past.
【单选题】陆游《游山西村》一诗中具有哲理意味的名句是()
A.
莫笑农家腊酒浑，丰年留客足鸡
B.
山重水复疑无路，柳暗花明又一村
C.
箫鼓追随春社近，衣冠简朴古风存
D.
从今若许闲乘月，挂杖无时夜叩门
相关题目：
【单选题】《游山西村》一诗中具有哲理意味的名句是
A.
从今若许闲乘月，拄杖无时夜叩门
B.
箫鼓追随春社近，衣冠简朴古风存
C.
莫笑农家腊酒浑，丰年留客足鸡豚
D.
山重水复疑无路，柳暗花明又一村