化简下面各式。t·t=( )(x-3)×2=( )a×5=( )42×5=( )

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问题:

化简下面各式。
t·t=(   )(x-3)×2=(   )
a×5=(   )42×5=(   )
考点:用字母表示数
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患者男,50岁。肝区持续性钝痛2个月,疼痛牵涉至右肩部,伴乏力,消瘦明显,食欲减退,有恶心、低热症状。查体:右肋缘下可触及肿大的肝脏,质地坚硬。 根据患者病史及初步体检结果,首先要考虑的是()

A.病毒性肝炎

B.肝炎后肝硬化

C.原发性肝癌

D.肝包虫病

E.肝脓肿

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* * 镜检查前24小时内应禁止( )

A.妇科检查
B. * * 灌洗
C. * * 宫颈上药
D.以上均应禁止

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球员踢球门球时,球未出罚球区,他再次触球裁判员应该()

A、警告该队员,重踢球门球

B、重踢球门球

C、警告该队员,因连踢应在第二次触球地点罚间接任意球

D、在第二次触球的地点罚间接任意球

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Aspirin is one of the safest and most effective drugs invented by man. The most popular medicine in the world today, it is an effective pain reliever. Its bad effects are relatively mild. It is also cheap.
For millions of people suffering from arthritis, it is the only thing that works. Aspirin, in short, is truly the 20th-century wonder drug. It is also the second largest suicide drug and is the leading cause of poisoning among children. It has side effects that, although relatively mild, are largely unrecognized among users.
Although aspirin was first sold by a German company in 1899, it has been around much longer than that. Hippocrates, in ancient Greece, understood the medical value of tree barks and leaves which today are known to contain a chemical found in aspirin. During the 19th century. there was a great deal of experimentation in Europe with this chemical, and it led to the introduction of aspirin. By 1915, aspirin tablets were available in the United States.
A small quantity of aspirin relieves pain and inflammation. It also reduces fever by affecting some of the body’s reactions. Aspirin is very irritating to the stomach lining. The best way is to chew the tablets before swallowing them with water, but few people can stand the bitter taste. Some people suggest crashing the tablets in milk or orange juice.

Which of the following statements is NOT true

A.Aspirin can relieve pain.

B.Aspirin can reduce fever.

C.Aspirin can relieve inflammation.

D.Aspirin can reduce stomach lining.

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求长为10m的碳素钢管子(规格为D219×10)的重量(已知碳素钢的密度为7.85g/cm3)。

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