动脉血不位于()。
A.左心室
B.左心房
C.主动脉
D.肺动脉
参考答案:D
22 The sight, hearing and other senses of wild animals are much better than_______of a human.
A that B those C which D what
吹刀时不戴耳塞、安全眼镜和手套,朝向过道吹刀,使用压缩空气嬉戏、降温等现象都是不允许的()