25Hz相敏轨道电路相位角调整需在室内防护盒调整端子按调整表接线
参考答案:对
对于需要泵房直接挡水的大型机组,为增大泵房的稳定性,一般建( )。
A.分基型泵房 B.干室型泵房C.湿室型泵房 D.块基型泵房
—Do you know the scientist _ Stephen Hawking?
—He is a disabled man, but he is very famous and successful. [ ]
A. call
B. called
C. calls
D. calling