下列天体中,离地球最近的恒星是() A.太阳 B.北极星 C.火星 D.金星

题型:选择题

问题:

下列天体中,离地球最近的恒星是 (   )

A.太阳

B.北极星

C.火星

D.金星

考点:地球的特殊性——存在生命的行星地球的普通性
题型:选择题

钢轨闪光焊时,当钢轨加热区扩大时,要使接口处产生一定程度的塑性变形,应当使()增大。

A.顶锻速度

B.顶锻加速度

C.顶锻量

D.顶锻时间

题型:选择题

声门上癌在布野时应该把何部位照射在内()

A、吼及淋巴引流区 

B、会厌至声带 

C、声门上及声门区 

D、全颈 

E、下颌骨上缘至喉室

题型:选择题

( )的征收方式一般适用于税收网络覆盖不到或税源很难控制的领域。

A.查定征收

B.查验征收

C.代收代缴

D.定期定额征收

题型:选择题

Early in the 16th century men were trying to reach Asia by traveling west from Europe. In order to find Asia they had to find a way past South America. The man who eventually found the way from the Atlantic Ocean to the Pacific was Ferdinand Magellan.
Magellan sailed from Seville in August 1519 with five ships and about 280 men. Fourteen months later, after spending the severe winter on the coast of Patagonia, he discovered the channel which is now called Magellan’s Straits. In November 1520, after many months of dangers from rooks and storms, the three remaining ships entered the ocean on the other side of South America.
They then continued, hoping to reach Asia. But they did not see any land until they reached the islands off the coast of Asia. Before they arrived at these islands, later known as the Philippines, Magellan was killed in battle. The remaining officers then had to get back to Spain. They decided to sail around Africa. After many difficulties, one ship with eighteen men sailed into Seville three years after leaving. They were all that remained of Magellan’s expedition. However, their achievement was great. They were the first men to sail round the world.

Which of the following is NOT mentioned in the passage concerning the expedition

A.Lack of navigation equipment.

B.Severe winter in Patagonia.

C.The death of Magellan.

D.Dangers from rocks and storms.

题型:选择题

双前臂烧伤()

A.烧伤面积为3%

B.烧伤面积为5%

C.烧伤面积为6%

D.烧伤面积为7%

E.烧伤面积为13%

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