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【单选题】
将一毛细管端插入水中,毛细管中上升5cm,若将毛细管向下移动,留出3cm在水面外,则出现何现象?A.
水不断从流出
B.
毛细管管口液面变为凸液面
C.
毛细管管口液面变为凹形液面
D.
毛细管管口水面呈水平面
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【简答题】下列选项中，属于财务评价指标中的静态评价指标的是（ ）。
【简答题】下列财务评价指标中，属于静态指标的是（ ）。
【单选题】The development of optical fiber over the last twenty years has resulted in the production of optical fiber cables that exhibit very low attenuation and transmission loss in comparison with the best c...
A.
cause very small reduction in the power of signals traveling over them
B.
make very severe enhancement resulting in loss of transmission
C.
show very weak coupling and infrequent transmission failure
D.
attract very little attention so as to cause transmission degradatio
【简答题】什么叫措施项目费?单价措施费和总价措施费如何区别?
【单选题】Some environmentalists warn that the soaring population will cause ______.
A.
the degradation of people's living standard in the next century
B.
the deterioration of living environment in the next century
C.
the reproduction of more wild species in the next century
D.
the extinction of more wild species in the next century
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