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【多选题】
在各种传动形式中,齿轮传动在现代机械中应用最为广泛,这是因为它具有A.
适用相距较远的两轴间的传动
B.
传动效率较高
C.
传动比恒定
D.
适用圆周速度和功率范围广
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【简答题】Nowadays more and more people are concerned about the pollution.（英译中）
【单选题】Nowadays, _______ cars are more and more popular.
A.
electronic
B.
electric
C.
electrical
D.
electricity
【简答题】Nowadays, more people mainly travel for______.
【简答题】_____________. “And nowadays, with more and more people moving to the country, individuals want to put an exclusive finishing touch to their properties. It has been a boost to crafts like mines,” ［A］G...
【单选题】Nowadays, the traffic in big city is getting more and more crowded.
A.
Nowadays
B.
the traffic in big city
C.
is getting
D.
more and more crowded.
【简答题】Nowadays more and more people are advised to arrange for insurance _______ they or their family members need medical treatment. A so that B. in order that C in case ...
【单选题】Nowadays more and more people are interested in arranging time for exercises and ______ to release the stress caused by the fast pace and pressure of their lives.
A.
meditation
B.
registration
C.
mediation
D.
illumination
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