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【单选题】

消防指挥官为()头盔。

A.
橙色
B.
黄色
C.
蓝色
D.
红色
题目标签:头盔指挥官
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参考答案:
参考解析:
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举一反三

【单选题】Questions 36~40 are based on the following passage.Richard Satava, program manager for advanced medical technologies, has been a driving force in bringing virtual reality to medicine, where computers ...

A.
will enable surgeons to be physically present on every battlefield
B.
can raise the spirits of soldiers wounded on the battlefield
C.
will greatly improve medical conditions on the battlefield
D.
can shorten the time for operations on soldiers wounded on the battlefield

【多选题】消防头盔由( )等主要部件组成。

A.
帽壳
B.
佩戴装置
C.
面罩
D.
披肩
E.
下颏带

【单选题】焊接时带焊接头盔的主要目的是什么

A.
防止紫外线对眼睛伤害
B.
看清楚焊接位置
C.
保护脸部皮肤