什么叫三测？
参考答案：三侧是指作业前、作业中、作业后测量轨温。
The central heating system of this office building is down and several workers ______ it right now.
A．had repaired
B．have repaired
C．repaired
D． are repairing
[复合型非选择题]患者，男，20岁，外伤后截瘫，为患者配置腋杖。
确定腋杖长度的最简单方法是：身长减去（）
A.40cm
B.41cm
C.42cm
D.43cm
E.以上都不对
