关于判断人员硫化氢中毒的程度，下列说法错误的是（）。A、观察

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问题单项选择题

关于判断人员硫化氢中毒的程度，下列说法错误的是（）。

A、观察病人瞳孔变化

B、观察病人嘴唇变化

C、观察病人皮肤有无变化

D、观察胸部有否起伏

答案

参考答案：B

单项选择题

喉内局限性恶性肿瘤最好的治疗方案是（）

A.照射治疗

B.喉正中切开术

C.全喉切除术

D.全喉切除和颈部根治术

E.镭针植入

单项选择题

She told me that she has already gone to the United States four times before she attended that conference.

A. had already been
B. has already been
C. already went
D. was already going