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【单选题】
在齿宽系数、材料及传动比已选定的情况下,影响齿面接触疲劳强度的主要因素是( )。A.
小齿轮分度圆直径
B.
小齿轮齿数
C.
模数
D.
压力角
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举一反三
【单选题】I really am not qualified to ()the safety or lack of safety in drinking this water.
A.
valuate
B.
measure
C.
evaluate
D.
vaulte
【简答题】Health and Safety: the importance of considering health and safety issues when planning office space
【简答题】A．calculating B．supposing C．estimating D．regarding
【简答题】A．having B．seeking C．losing D．regarding
【简答题】an inaccurate forecast regarding the reading habits of children
【简答题】A．regards B．in relation C．with regard D．regarding
【单选题】The radiotelephone safety message urgently concerned with safety of a person would be prefixed by the word ()
A.
Mayday
B.
Pan
C.
Safety
D.
Interco
【单选题】Food Safety and Foodborne Illnesses Food safety is an increasingly important public health issue. Governments all over the world are intensifying their efforts to improve food safety. These efforts ar...
A.
to
B.
against
C.
with
D.
towards
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