题型：名词解释 完形填空。 Tom ____1____ a very good student, and he ____2____ doing homework, because he liked ____3____ other things in his free time. Usually he didn't do ____4____ homework, and when he did it, he always made ____5____ mistakes. Then one day, his maths teacher looked ____6____ Tom's homework and found that he had done ___7_____ right. He was very happy and very surprised. He asked Tom to his desk and ____8____ to him, "You have done all your homework right this time, Tom. ____9____ your father help you?" Usually Tom's father did help him with his homework, but this time he didn't, because he was not at home. Tom answered, "No, sir. He was busy last night, so I had to do it all ___10____ myself." ( )1. A. am not ( )2. A. doesn't ( )3. A. do ( )4. A. his ( )5. A. a lot ( )6. A. up ( )7. A. all his homeworks ( )8. A. say ( )9. A. Did ( )10.A. to B. was not B. don't like B. does B. him B. much B. at B. all homeworks B. says B. did B. by C. were not C. didn't like C. did C. he C. any C. after C. all his homework C. said C. Was C. for D. are not D. didn't D. to do D. her D. a lot of D. for D. all the homework D. saying D. Were D. at 查看答案
题型：名词解释 根据《建筑基坑支护技术规程》（DB11/489-2016）第5.7.5条，基坑开挖后，应及时对排桩的桩间土采取防护措施，可采用内置钢丝网或钢筋（板）网的喷射混凝土护面等处理方法，喷射混凝土面层的厚度不宜小于（）mm，混凝土强度等级不宜低于（）。A.50；C15B.50；C20C.100；C15D.100；C20 查看答案