钙基脂润滑油属（）润滑剂。
A.液体
B.半液体
C.固体
D.气体
参考答案：B
It was reported in the newspaper that one of our students got the first place in the last Provincial Chemistry Olympic Contest in June．
A．having been held
B．to be held
C．being held
D．held
1151系列压力变送器分ABEG四种型号，（）输出为10～50mA
A、（A和B）
B、（E和G）
C、（A和E）
D、（B和G）
