问题
单项选择题
对涉及混凝土结构安全的重要部位应进行（）检验，对预制构件应按规定进行（）检验，检验按国家标准GB50204的规定执行。
A、结构实体，结构实体
B、结构性能，结构实体
C、结构性能，结构性能
D、结构实体，结构性能
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
对涉及混凝土结构安全的重要部位应进行（）检验，对预制构件应按规定进行（）检验，检验按国家标准GB50204的规定执行。
A、结构实体，结构实体
B、结构性能，结构实体
C、结构性能，结构性能
D、结构实体，结构性能
参考答案：D
| 完形填空。 | |||
| Tom and Sam are twin brothers. They like playing soccer. They live 1 a big house 2 a beautiful garden. The house is 3 the sea. They often go to the sea and swim 4 it. There are four 5 in 6 family. They are parents, Tom and Sam.. Their father is a worker, 7 their mother is a teacher. 8 is Sunday today. Tom and Sam don't go to school. Their parents are not at work. They go to a park by car. Now they are in the park. The two 9 are swimming in the river and their parents are sitting 10 a tree. Look, they are talking and laughing. A bird is flying in the sky. | |||
( )1. A. in
| B. on B. on B. in B. near B. girls B. theirs B. all B. This B. child B. on | C. at C. with C. at C. to C. workers C. their C. and C. That C. people C. under | D. to D. to D. on D. on D. people D. they D. so D. It's D. children D. at |