问题
单项选择题
管线施工中遗留在管内的石块、棒等杂物以及紧贴管壁的硫铁粉末，在使用橡胶清管球进行疏通时效果不够理想，这时可以通过加大橡胶球的()而得到改善。
(A)厚度;
(B)质量;
(C)过盈量;
(D)过亏量
答案
参考答案：C
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管线施工中遗留在管内的石块、棒等杂物以及紧贴管壁的硫铁粉末，在使用橡胶清管球进行疏通时效果不够理想，这时可以通过加大橡胶球的()而得到改善。
(A)厚度;
(B)质量;
(C)过盈量;
(D)过亏量
参考答案：C
阅读理解。
A. Ellen James. B. Barbara Calamari. C. Cathy West. D. Tomek Tryzna. 2. How much does the book The Trouble with Teachers cost you? A. 24.0 yuan. B. 33.0 yuan. C. 30.0 yuan. D. 15.0 yuan. 3. Which book should you buy if you want to know about a kind of animal? A. I've Got a Secrets. B. The Trouble with Teachers. C. Little Bull. D. Miss Nobody. 4. Cathy West's book is _____ yuan cheaper than Tomek Tryzna's. A. four B. three C. two D. one 5. Which of the following is TRUE according to the table? A. The book with the price of 30.0 yuan tells us how to keep a diary. B. Barbara Calamari's book tells us the story in Angela's home. C. Miss Nobody is about a fifteen-year-old girl. D. If you pay 20.0 yuan, you can buy two books above. |