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【单选题】
板框过滤机在过滤阶段结束的瞬间,假设框已充满,在洗涤时,洗涤液穿过的滤布面积等于( )。A.
框内面积的一半
B.
框内面积的 2 倍
C.
框内面积
D.
框内面积的 1/4
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【单选题】Who cannot sit in the House of Lords?
A.
Archbishops of Canterbury and York
B.
senior bishops of Church of England
C.
all the hereditary peers and peeresses
D.
life peers
【简答题】________ did Mr. Wu enjoy? He enjoyed the Long Island Iced Tea.
【单选题】在换热器中,间壁任一侧的对流传热速率 = 推动力 / 阻力,其中推动力是指
A.
两相流体温度差（ T – T ˊ） ;
B.
冷流体进出口温度差（ T 2 ˊ -T 1 ˊ ） ;
C.
热流体进出口温度差（ T 2 -T 1 ） ;
D.
流体主体温度和管壁温度差（ T – T W ）或（ T W ˊ – T ˊ）
【单选题】在换热器中,间壁一侧的对流传热速率 = 推动力 / 阻力,其中推动力是指( )。
A.
同除以流体的密度
B.
同乘以重力加速度
C.
同乘以流体的密度
D.
同除以重力加速度
【单选题】Why did the author want to conceal the fact that he had seen the present?
A.
Because he did not think the present wonderful
B.
Because he didn’t want his sister to know that only he would have such a present
C.
Because he was not sure whether the present was for him
D.
Because he didn’t want to strike a blow against her mother’s happiness
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