()STR12-280机器人例程的S_T()函数中设置TMOD=0x02;的意义是什

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问题:

()STR12-280机器人例程的S_T()函数中设置TMOD=0x02;的意义是什么。

A.设置T0为工作方式2定时器模式

B.设置T0为工作方式2计数器模式

C.设置T1为工作方式2定时器模式

D.设置T1为工作方式2计数器模式

考点:电子与通信技术单片机原理及应用单片机原理及应用题库
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一家汽车运输公司10月份的营业额是260000元.如果按营业额的3%缴纳营业税,10月份应缴纳营业税多少元?

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     Sydney-A shark savaged a schoolboy's leg while he was surfing with his father at a beach in Sydney

on February 23. It was the third shark attack along the coast of Australia's largest city in a month.

     The 15yearold boy and his father were in the water off Avalon, on Sydney's northern beaches,

around dawn when he was attacked. The city's beaches are packed with locals and tourists during the

summer months.

     "The father heard a scream and turned to see his son thrashing(激烈扭动)about in the water, "police

said. "Fortunately, the shark swam away and the boy was helped to the shore by his father. "

     Lifesaving Club spokesman Nick Miller said, "It got him around the top of his left leg and the father

came and dragged him out of water. "He said the boy was bleeding heavily when he was brought to the

shore. "There was a lot of pain, as you can imagine. "The teenager was airlifted to hospital for treatment

for leg injuries.

     Police said the bites "cut through to the bone", but the boy did not appear to have sustained any

fractures (骨折).  He was in a stable condition now.

     Several beaches were closed after the attack. Water police and lifeguards were searching for the

shark, while police hoped to identify its species by the shape of the bite marks. But they said it was too

early to say what type of shark attacked the boy. "I don't even know if he saw it, "Miller said.

     Many shark species live in the waters off Sydney's beaches, but attacks on humans are still relatively

rare.  However, there were two attacks on successive days earlier this month, one on a navy diver in

Sydney harbor, not far from the famous Opera House, and the other on a surfer at the city's

worldfamous Bondi beach.

    Fishermen say shark numbers are on the rise. There is a ban on commercial fishing in the harbor,

which has increased fish stocks. Marine experts also claim environmental protection has created a

cleaner environment, attracting sharks closer to the shore as they chase fish. Many shark species,

including the Great White-the maneaters made famous in Steven Spielberg's Jaws-are protected in

Australian waters.

1. The report mainly tells us ________.

A. shark attacks on humans are on the rise

B. sharks attacked humans three times in one month

C. a boy was attacked by a shark at a Sydney beach

D. shark numbers are increasing in the waters off Sydney's beaches

2. The underlined word "savaged" in the first paragraph probably means "________".  

A. attracted      

B. dragged

C. bit                    

D. packed

3. What do we know about the city of Sydney from the passage?

A. It is one of the largest cities in Australia.

B. Sydney harbor is not far from the famous Opera House.

C. There are many locals and tourists on its coast all the year round.

D. There are few shark species in the waters off Sydney's beaches.

4.  About the injury of the boy we know that ________.

A. he was losing much blood when he was dragged out

B. he was very nervous when he was sent to hospital

C. he may be in danger of losing his leg

D. he was injured in the right leg

5. All the following are the causes of Australia's sharks' increasing EXCEPT that ________.

A. environmental protection has created a cleaner environment

B. a ban on commercial fishing has increased fish numbers

C. many shark species are protected in Australian waters

D. the film Jaws has made the Great White famous

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粤海公司以CIF广州USD 9500/吨从美国进口HHM5502BN薄膜级低压高密度聚乙烯400吨 (列入法检范围,属自动进口许可管理并实行“一批一证”制),进口合同还规定了数量装载的机动幅度为正负5%。该批货物于2007年8月10日由“华威”号轮船载运进口。收货单位申报前看货取样时,发现实际到货的数量为420吨,且其中混有型号为HHMTR-144的同类商品40吨。该公司即与外商交涉,外商同意补偿HHM5502BN货物20吨。外商同时要求将型号为HHMTR-144的商品降价留在境内,但收货人未予接受。
根据上述材料,回答下列问题:

粤海集团向海关办理进口申报时,其申报数量应为( )。

A.440吨

B.420吨

C.400吨

D.380吨

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下面的发明,()属于我国古代的四大发明

A.风筝

B.铸铁

C.罗盘

题型:单项选择题

水闸进行荷载计算时,计算单元为沿水闸轴线方向取单位长度一米,计算各种荷载值的大小。()

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