密度计泵电机的电压是()。
A.110V
B.220V
C.380V
D.500V
参考答案:C
----Look!Jane has_____blue expression on her face.
----So it seems that_____bad news proves true.
A.the; a
B.the;/
C.a; the
D.a;/
“上有政策,下有对策”是一种典型的()