中速磨煤机启动过程中,调节冷热风挡板,控制磨煤机通风量()以上。
A.30%
B.40%
C.50%
D.20%
参考答案:C
男,68岁,呼吸困难、轻度吞咽困难3月余,结合CT图像,最可能的诊断是()
A.气管 * * 状瘤
B.气管脓肿
C.气管炎性假瘤
D.食管癌
E.甲状腺癌
"Neal,listen,"she said,looking straight at him."I ask you not to get________in this kind of matter.It's none
of your business."[ ]
A. caught
B. involved
C. attached
D. connected