引起漏睛的西医病因有,除了()
A.沙眼
B.天行赤眼
C.慢性鼻炎
D.鼻中隔弯曲
E.鼻息肉
参考答案:B
生态位比较接近的种类之间,种间竞争不激烈。()
A fuel line breaks,sprays fuel on the hot exhaust manifold,and catches fire. Your FIRST action should be to().
A.batten down the engine room
B.start the fire pump
C.apply carbon dioxide to the fire
D.shut off the fuel supply