单项选择题

在分流河道砂体中,顺流向的渗透率_______逆流向的渗透率。( )。
A、大于
B、小于
C、等于

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单项选择题
How about seeing a movie with me today, Alan? __________. A、I am looking forward to seeing you again. B、Many thanks. C、Sounds great! D、You look great today!
单项选择题
It is important to remember that when the JFET is used as a voltage variable resistor, which is one of its practical applications, the voltage VDS is ________ VDS(max) and | VGS | is ________ |VP|.
A.very much greater than; very much greater than
B.very much less than; very much greater than
C.very much greater than; very much less than
D.very much less than; very much less than
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