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搜题
【单选题】
对于10Mb/s总线形以太网,以下哪一项关于冲突的描述是正确的?A.
发送完前导码和帧开始分界符没有检测到冲突,表明不会发生冲突
B.
发送完MAC帧中前64B信息没有检测到冲突,表明不会发生冲突
C.
发送完MAC帧目的地址没有检测到冲突,表明不会发生冲突
D.
发送完MAC顿目的地址和源地址没有检测到冲突,表明不会发生冲突
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皮皮学刷刷变学霸
举一反三
【单选题】Listen to the short dialogues and choose the best answer.
A.
The woman doesn't want to change the time.
B.
The man needs to change the time.
C.
The man is not free at 1pm.
D.
The woman is not free at 9 pm.
【单选题】listen to the short conversation and choose the best answer.
A.
she will inform the faculty members in person.
B.
she has to ask the engineers to repair the network.
C.
she is not sure if the network will be ok in the afternoon.
D.
she can not send the email right now.
【单选题】Listen to the short conversation and choose the best answer to the question you hear.
A.
The human nature of dreaming the impossible.
B.
Traveling between the past and the future.
C.
The possibility of traveling back in time.
D.
The popularity of time travel stories.
【单选题】男性,36岁。经常餐后3~4小时上腹不适,烧灼样痛,近2个月来频繁呕吐,查体:上腹部可见蠕动波,上腹部轻压痛,肝脾未触及,移动性浊音(-),可闻及振水音。最可能的诊断是
A.
胃癌
B.
慢性胃炎
C.
肠梗阻
D.
胃溃疡
E.
幽门梗阻
【单选题】Listen to the short conversation and choose the best answer to the question you hear.
A.
Travel alone in safe places in India.
B.
Follow the Indian culture and customs.
C.
Wear the same clothes as the local women.
D.
Choose another place to go instead of India.
【单选题】Listen to the short conversation and choose the best answer to the question you hear.
A.
Send these children to school.
B.
Help clean the tiny, dirty houses.
C.
Give these children some money and food.
D.
Have their daughter get to know such a life.
【单选题】Listen to the short coversation and choose the best answer.
A.
The furniture has to be rearranged .
B.
The sound equipment has to be set up .
C.
The conference room has to be cleaned .
D.
The video machine has to be checked .
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