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【多选题】
机械设计本质安全是指机械的设计者，在设计阶段采取措施来消除隐患的一种实现机械安全的方法。机械设计本质安全包括( )等方面的内容。A.
设计中排除危险部件
B.
使运动的部件处于密封状态
C.
避免管理缺陷
D.
提供自动反馈设备
E.
减少或避免在危险区工作
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反馈参考答案：
举一反三
【单选题】We may call the person who holds the meeting ________.
A.
Mr. Chairman
B.
Mr. Presiden
C.
Mr. Host
【单选题】—Why don’t you use your own knife? —Sorry, I’ve _____ it at home.
A.
lost
B.
forgotten
C.
kept
D.
left
【简答题】Why don’t you use a ___ (sharp) knife?
【单选题】---Why don’t you use the knife? ---It needs ___________________.
A.
sharpen
B.
being sharpened
C.
sharpening
D.
to sharpen
【单选题】---- Can you show me how to use Ipad 2? ---- Why don’t you just read the _____?
A.
instruction
B.
introduction
C.
description
D.
directions
【单选题】We may call the person who holds the meeting .
A.
Mr. Chairman
B.
Mr. President
C.
Mr. Host
【单选题】: a person who holds a position of authority in an organization
A.
veil
B.
official
C.
dowry
D.
perform
【单选题】: a person who holds a position of authority in an organization
A.
veil
B.
perform
C.
official
D.
dowry
【简答题】a person who holds strong beliefs and opinions, and is intolerant of anyone who disagrees b _
【简答题】a person who holds no religious beliefs i _
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