病毒性脑膜炎主要累及部位是()
A.硬脑膜
B.软膜
C.蛛网膜
D.软膜和蛛网膜
E.所有脑膜
参考答案:D
Mrs. Liu teaches _______ English. We like ______ class very much.[ ]
A. me; his
B. me he
C us; his
D. me ;him
水轮发电机最近发展起来的制动技术是()。
A.电制动
B.机械制动
C.风闸制动
D.多次制动