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【单选题】
在恒定的温度和压力下,已知反应A→2B的等压反应热△H1及反应2A→C的△H2,则反应C→4B的△H3是
A.
2△H1+△H2
B.
△H2-2△H1
C.
△H1+△H2
D.
2△H1-△H2
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参考答案:
举一反三
【判断题】建设工程竣工验收备案表,是在单位工程竣工验收合格后,由建设单位负责到质检监督部门办理。
A.
正确
B.
错误
【单选题】遗传多态性的形成机制:
A.
基因突变
B.
基因重组
C.
基因选择
D.
遗传漂变
【单选题】Trust is a tricky business. On the one hand, it's a necessary condition 1 many worthwhile things: child care, friendships, etc. On the other hand, putting your 2, in the wrong place often carries a hi...
A.
In contrast
B.
As a result
C.
On the whole
D.
For instance
【单选题】若 int m=6,n=2;则表达式m/=n+3的值是_______。
A.
0
B.
1
C.
1.2
D.
2
【单选题】Trust is a tricky business. On the one hand, it's a necessary condition 1 many worthwhile things: child care, friendships, etc. On the other hand, putting your 2, in the wrong place often carries a hi...
A.
consult
B.
compete
C.
connect
D.
compare
【简答题】工程竣工验收后10日内,应向委托部门报送建设工程质量监督报告。
【判断题】工程竣工验收后,施工单位应向建设单位提交已签署的工程质量保修书。()
A.
正确
B.
错误
【单选题】遗传多态性的形成机制是
A.
基因分离
B.
基因的自由组合
C.
基因突变
D.
基因频率
【单选题】Life in London has so many________-nightclubs,good restaurants and so on. [     ]
A.
collections
B.
instructions
C.
attractions
D.
expressions
【单选题】Trust is a tricky business. On the one hand, it's a necessary condition 1 many worthwhile things: child care, friendships, etc. On the other hand, putting your 2, in the wrong place often carries a hi...
A.
Therefore
B.
Then
C.
Instead
D.
Again
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