质量为1 kg的物体从某一高度自由下落,则该物体下落1 s内(物体还未着地)重力

题型:选择题

问题:

质量为1 kg的物体从某一高度自由下落,则该物体下落1 s内(物体还未着地)重力做功的平均功率为(g取10 m/s2)(  )

A.25 W

B.50 W

C.75 W

D.100 W

考点:功率
题型:选择题
Mr.Smith works in an office. He’s very busy    小题1:.Every evening, when he comes back from his office, he’s always tired and wants to go to bed early.  小题2: .She doesn’t stop talking until she falls asleep, but it’s usually too late and Mr. Smith has to get up on time in the morning when she is asleep.
One day the man felt terrible and couldn’t go to work.  小题3: ,and Mrs. Smith went to the hospital with him. The woman told the doctor all at once and the doctor understood why. He wrote out a note(处方).  小题4:, the doctor said to her,“The bottle of medicine is for your husband and the pills are for you.”
“For me?”the woman said in surprise(惊讶地),“I’m fine. I don’t need any medicine!”
“I don’t think so,madam,”said the doctor,“小题5: .Your husband will soon be all right if you take them.”.
A.He decided to go to see a doctor.
B.so he always has a good rest.
C.They are sleeping pills.
D.But his wife often has lots of things to tell him after supper.
E.when Mrs. Smith brought the medicine to the doctor’s room.
F.and he has no time to have a good rest.
 
从方框中所给的选项中选出能填入空白处的最佳选项,补全短文,其中有一项为多余选项(10分)
题型:选择题

— May! How is your plan? I heard you started it last Sunday.

— Oh! I _____ for it, but I haven't decided where to start it. [      ]

A. have prepared

B. had prepared

C. have been preparing

D. was preparing

题型:选择题

女性,38岁,手工业工人,右拇指疼痛,伸屈受限并弹响。最可能的诊断是().

A.风湿性关节炎

B.类风湿性关节炎

C.狭窄性腱鞘炎

D.骨性关节炎

E.骨软骨炎

题型:选择题

在众多激励理论中进一步改进了马斯洛需要层次理论并提出“挫折—退化”观点的是( )。

A.目标设置理论

B.公平理论

C.三重需要理论

D.ERG理论

题型:选择题

矩阵制最明显的特征就在于,它突破了统一指挥的框架,员工同时受到职能经理和产品经理的()

A、单重领导

B、双重领导

C、个人领导

D、直接领导

更多题库