汽轮机冷态启动过程中进行中速暖机的目的，是为了防止转子的脆性破坏和避免产生过大的热应力。
参考答案：对
He ________ comb his hair at the table, even though he knows I don't like it. [ ]
A. shall
B. may
C. will
D. can
哪项不是职业病诊断依据
A．职业史
B．疾病史
C．实验室检查
D．相关症状体征
E．劳动卫生现场调查
