用变送器的输出直接控制调节器,能否起调节作用?()
A、能
B、不能
C、视控制要求而定
D、无法确定
参考答案:C
句型转换。
1. She did her homework at school yesterday. (改为一般疑问句)
____ she ____ her homework at school yesterday.
2. He said, "I am a new student. " (改为间接引语)
He said ____ a new student.
3. He asked me, "How will you get to the party?" (改为间接引语)
He asked me ____ ____ ____ ____ to the party.
4. My brother watched the match last night. (就画线部分提问)
____ ____ ____ brother ____ the match?
5. Is the girl good at dancing? (改为同义句)
____ the girl ____ ____ ____ dancing?
油污的清洗方法大致分为()和有机溶剂清洗两大类。
A.酸性溶液
B.碱性溶液
C.中性溶液
D.无机溶液