皮皮学,免费搜题
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搜题
【单选题】
常用的消毒酒精浓度是()。
A.
75%
B.
50%
C.
99.8%
D.
30%
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【单选题】影响水泥混凝土抗压强度的因素很多,可能包含: ①灰水比,灰水比越大强度越高; ②骨料种类,采用碎石比采用卵石的强度低; ③同等条件下,水泥强度等级越高,混凝土强度越大; ④养生温度越高,强度越大; ⑤试验试件尺寸越大,强度越高; 上面描述的水泥混凝土抗压强度的影响因素中错误的有()处。
A.
1
B.
2
C.
3
D.
4
【多选题】影响抗碎强度因素有( )
A.
煤化程度
B.
煤岩成分
C.
矿物含量
D.
风化
E.
水分
【单选题】Everybody says Rebecca and John is a perfect match; no one has ever known __________ couple.
A.
a better
B.
the better
C.
a best
D.
the best
【单选题】影响固体废物破碎难易程度的因素有机械强度和( )
A.
韧性
B.
硬度
C.
含水率
D.
抗剪力
【简答题】Paragraph 9: The central questions of this debate are: "What is the major purpose of attending university?" and "Who should be responsible for the cost?" For me, the answer has always been that my pur...
【判断题】Questions and debate regarding the ethical standards for truth-telling are central and fundamental in the negotiating process.
A.
正确
B.
错误
【判断题】every debater in the public forum debate has the opportunity to ask and answer questions.
A.
正确
B.
错误
【单选题】Everybody ______ me Millie at school. [     ]
A.
says
B.
tells
C.
calls
D.
asks
【判断题】The moral and ethical questions raised by performing experiments on animals are subject to debate.
A.
正确
B.
错误
【单选题】生物地球化学性疾病的发生主要是由于( )
A.
人体摄入微量元素过多所致
B.
人体摄入微量元素过少所致
C.
地质地理原因使当地居民摄入微量元素过多或过少所致
D.
环境破坏对地质条件影响使人体摄入矿物质异常所致 E.饮食中某种元素含量异常所致
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