问题
单项选择题
锚杆锚固力可采用抽样检查，抽样率不得少于（）。
A.l%
B.2%
C.3%
D.4%
答案
参考答案：A
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锚杆锚固力可采用抽样检查，抽样率不得少于（）。
A.l%
B.2%
C.3%
D.4%
参考答案：A
| 用所给词的适当形式填空。 | |
2. David _____ born in China. 3. My brother enjoys _____ pictures. 4. They are from America.They _____ English. 5. He _____ to the teacher carefully (仔细地) in class. 6. he _____ swimming? 7. He _____ football after class. 8. Jim and Tom _____ hard at school. 9. Sue _____ long hair. 10. I _____ a swimsuit when I go swimming. |