问题
单项选择题
起重司索作业人员应掌握（）报废标准。
A、卷筒；
B、吊钩、绳索；
C、臂架；
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
起重司索作业人员应掌握（）报废标准。
A、卷筒；
B、吊钩、绳索；
C、臂架；
参考答案：B
| 从方框中选择正确的答语。 | |
2. Is your father healthy? 3. How often do you watch TV? 4. What does Jeff do? 5. When does he have breakfast? 6. What is your favorite exercise? 7. Does your friend like junk food? 8. How many students are there in your class? 9. Who do you think is your favorite classmate? 10. Let's play volleyball together. 1.____2.____3.____ 4.____ 5.____ 6.____7.____8.____ 9.____10.____ |