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【简答题】
如附图所示,敞口容器内不互溶的油和水,油层和水层的厚度分别为700mm和600mm。在容器底部开与玻璃管相连。已知油与水的密度分别为800kg/m3和1000kg/m3。计算(1)玻璃管内水柱的高度;(2)判断A与B、C与D点的压力是否相等。
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A.
正确
B.
错误
【判断题】You had better go to the job interview together with your parents, friends or other relatives so as to make yourself even more confident and less nervous.
A.
正确
B.
错误
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A.
增大
B.
不变
C.
减小
D.
无法确定
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A.
as well
B.
also
C.
either
D.
neither
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【单选题】--- Daddy, I don’t want to go to Jimmy’s birthday. --- You had better go. ____ you make a promise, you have to keep it.
A.
Once
B.
Even if
C.
Unless
D.
In case
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