用于关节部位的绷带包扎方法是（）
A.环形包扎法
B.蛇形包扎法
C.螺旋形包扎法
D.螺旋反折法
E.8字形法
参考答案：E
About half of million of Afghans have no_______ to basic health services due to continued war and
conflicts.[ ]
A. means
B. approach
C. channel
D. access
离心泵扬程的测定选择压力表时，工作压力值应在最大量程（）之间.
A.1/3-1/2
B.1/3-2/3
C.1/2-3/4
D.1/2—2/3
