对咯血患者的病情观察最重要的是
A.脉搏和血压变化
B.体温高低
C.有无窒息先兆或窒息表现
D.咯血速度快慢
E.咯血量多少
参考答案:C
每一个合数都可以写成K个质数的乘积,在小于100的合数中,K的最大值为( )。
A.2
B.3
C.4
D.5
E.6
Safety goggles or glasses are NOT normally worn when().
A.using a rotary grinder with an installed shield
B.letting go the anchor
C.handling wire rope or natural fiber line
D.painting with a spray gun