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【单选题】
预计泵送间歇时间超过45min或当混凝土出现离析现象()。A.
立即二次搅拌并减缓浇筑速度
B.
立即二次搅拌并增大浇筑速度
C.
立即用水泥浆冲洗残留的混凝土。
D.
立即用压力水冲洗残留的混凝土。
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【判断题】大型煤粉燃烧设备的热损失包括排烟热损失q2、化学（气体）未完全燃烧热损失q3、机械（固体）未完全燃烧热损失q4、散热损失q5、其他热损失（主要是灰渣物理热损失）q6，其中：排烟热损失q2所占比例最大。
A.
正确
B.
错误
【单选题】The S&P 500 index rose by 2.3% on July 29th as a result of ______.
A.
interruption of the ministerial talks
B.
the healthy pace of globe GDP
C.
the growth of the world's GDP by $70 billion
D.
other factors
【单选题】As a result of the enclosures of the 17th and 1th centuries people were______.
A.
legally entitled to own land
B.
forced to look elsewhere for means of supporting themselves
C.
not adequately compensated(补偿) for the loss of their land
D.
badly paid for the work they managed to find
【单选题】As a result of the enclosures of the 17th and i8th centuries,
A.
people were no longer legally entitled to own land
B.
people were forced to look elsewhere for means of supporting themselves
C.
people were not adequately compensated for the loss of their land
D.
people were badly paid for the work they managed to find
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