影响滤失量与滤饼质量的因素有膨润土的含量、固相颗粒的水化分散

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问题单项选择题

影响滤失量与滤饼质量的因素有膨润土的含量、固相颗粒的水化分散性、（）和滤失时间等。

A.滤液的黏度

B.井内压差

C.井下温度

D.上述三项

答案

参考答案：C

单项选择题

下列说法中，正确的是()。

A．一般来讲，集线器是局域网连接设备

B．一般来讲，集线器是网关模拟设备

C．一般来讲，集线器很昂贵

D．以上说法都正确

问答题

Directions:

A. Study the following cartoon carefully and write an essay in no less than 200 words.

B. Your essay must be written clearly on ANSWER SHEET 2.

C. Your essay should meet the requirements below:

1) Describe the cartoon,

2) deduce the purpose of the drawer of the picture, and

3) give your comments.