我国铁道部在全国分设的铁路局是( )
A．派出机关
B．分支机关
C．临时机关
D．辅助机关
参考答案：B
装饰抹灰砂浆工程中常用的有______等面层用砂浆，有______等专用砂浆，以及______用面层砂浆。
A Class C EPIRB（）.
A.is primarily designed for vessels operating up to 50 miles offshore or on foreign waters
B.transmits a signal that can be detected by satellite
C.must be manually activated
D.operates in the medium and low frequency bands
