检查耙斗装岩机时必须要()开关,防止伤人。
A.切断
B.启动
C.闭锁
D.都不是
参考答案:C
Change the forms of the following sentences. 句型转换。
1. Lucy works hard at school.(变为一般疑问句)
2. I'm making a call.(对划线部分进行提问)
3. I have some homework to do.(变为一般疑问句)
4. My favourite animal is a hare.(对划线部分进行提问)
5. Do you like apples?(加bananas变选择疑问句)
引进技术和进口设备其他费用不包括( )。
A.技术引进费
B.担保费
C.分期付款利息
D.临时设施费