电力机车的气压调压器共有（）部分组成。
A.1
B.2
C.3
D.4
参考答案：D
She ____________ very pleased ____________ his new house.[ ]
A. is; to
B. was; with
C. were; about
D. was; in
燥干清窍，其证可见：（）。
A.耳鸣
B.目赤
C.苔薄黄脉数
D.干咳无痰
E.龈肿咽痛
