问题
单项选择题
钻井液滤失量过大，滤饼厚而松会导致（）。
A、泵压下降
B、粘度降低
C、钻井液密度下降
D、井眼不规则
答案
参考答案：D
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钻井液滤失量过大，滤饼厚而松会导致（）。
A、泵压下降
B、粘度降低
C、钻井液密度下降
D、井眼不规则
参考答案：D
| 根据对话情景和句意，选用合适的频率副词填空。 | |
—Yes, I ____ go shopping there. 2.—Do you have any friends in this city? —No, I ____ came to this city. 3. My sister____ goes to the movies on weekends but she sometimes goes to the mowes on weekdays. 4. Too much ice cream is bad for our health, so I ____ eat it. 5. Sally likes writing to me, but ____ she calls me up. |