脑脊液氯化物减低见于 ()
A.结核性脑膜炎
B.病毒性脑膜炎
C.尿毒症
D.肾炎
E.心力衰竭
参考答案:A
I was just about to jump into the river________the guide stopped me saying "Dangerous".[ ]
A. while
B. when
C. if
D. because
确定一个控件大小的属性是( )。
A.Width或Height
B.Width和Height
C.Top或Left
D.Top和Left