（）能够防止塔机超载、避免由于严重超载而引起塔机的倾覆或折臂等恶性事故。
A.力矩限制器
B.吊钩保险
C.行程限制器
D.幅度限制器
参考答案：A
根据首字母填词。
1. He gave his daughter a large a_______ of money.
2. Bread is baked in an o_______.
3. You should a_______ some water to the soup.
4. We need two t_______ of honey.
5. How m_______ yogurt do you want to buy?
具轮伞花序的药材为
A．金钱草
B．益母草
C．薄荷
D．青蒿
E．车前草
