问题
单项选择题
钢筋弯曲机弯钢筋时，严禁在弯曲钢筋的作业半径内和机身不设( )的一侧站人。弯曲好的半成品应堆放整齐，弯钩不得朝上。
A．防护装置
B．漏电保护器
C．固定销
D．活动销
答案
参考答案：C
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钢筋弯曲机弯钢筋时，严禁在弯曲钢筋的作业半径内和机身不设( )的一侧站人。弯曲好的半成品应堆放整齐，弯钩不得朝上。
A．防护装置
B．漏电保护器
C．固定销
D．活动销
参考答案：C
| 选词填空。 | |
2. Anna wants to _____ her ears _____. 3. They talk _____ doing homework. 4. They aren't _____ at that age. 5. He shouldn't _____ because he's too tired. 6. I am allowed to _____ until 11:00 p.m. 7. He has to _____ his room every morning. 8. Last summer I _____ to volunteer at the local hospital, but I couldn't because I had to go back to school. |