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【单选题】
一对作减速传动的标准渐开线直齿圆柱齿轮,小齿轮为1齿轮,大齿轮为2齿轮,材料、热处理及齿面硬度均相同,则正常条件下传动时,两齿轮间产生的接触应力和弯曲应力关系为 ______。
A.
σH1>σH2 σF1=σF2
B.
σH1
C.
σH1=σH2 σF1
D.
σH1=σH2 σF1>σF2
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举一反三
【简答题】The word 'petroleum' comes from ______ and ______.
【单选题】已知偶函数 的图象经过 ,则函数的图象必经过另一点 (D )
A.
D1
B.
2
C.
3
D.
4
【单选题】"No fuels other than petroleum will be fit for this purpose." The sentence means that
A.
Neither petroleum nor any other fuels wil be fit for this purpose.
B.
Other fuels will be fitter for this purpose than petroleum.
C.
Petroleum will be fitter for this purpose than other fuels.
D.
Only petroleum will be fit for this purpose.
【单选题】治疗慢性泄泻肝气乘脾者,宜辨证配伍的腧穴是()
A.
太冲
B.
公孙
C.
中脘
D.
神阙
E.
天枢
【单选题】泄泻肝气乘脾配穴
A.
曲池、大椎
B.
阴陵泉、脾俞
C.
期门、太冲
D.
关元、血海
E.
足三里、百会
【单选题】"No fuels other than petroleum will be fit for this purpose." The sentence means that
A.
Neither petroleum nor any other fuels will be fit for this purpose.
B.
Other fuels will be fitter for this purpose than petroleum.
C.
Petroleum will be fitter for this purpose than other fuels.
D.
Only petroleum will be fit for this purpose.
【单选题】Keyser Petroleum just purchased some equipment at a cost of $67,000. What is the proper methodology for computing the depreciation expense for year 2 if the equipment is classified as 5-year property ...
A.
$67,000 × (1 - 0.20) × 0.32
B.
$67,000/(1 - 0.20 - 0.32)
C.
$67,000 × (1 + 0.32)
D.
$67,000 × 0.32
【简答题】jus sanguinis
【单选题】1-12、已知偶函数 的图象经过 ,则函数的图象必经过另一点
A.
B.
(2,3)
C.
【简答题】强行法(jus cogens)
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