教育教学研究中最基本最常用的一种研究方法是（）A．观察 B．调查 C．访谈 D．个案

B

The largest earthquake (magnitude里氏9.5 ) of the 20th century happened on May 22, 1960 off the coast of South Central Chile.

It generated (生成) one of the most destructive Pacific-wide tsunamis (海啸). Near the

generating area, both the earthquake and the tsunami were very much destructive, particularly in the coastal area from Concepcion to the south end of Isla Chiloe. The largest tsunami damage occurred at Isla Chiloe-the coastal area closest to the epicenter(震中). Huge tsunami waves measuring as high as 25 meters arrived within 10 to 15 minutes after the earthquake, killing at least two hundred people, sinking all the boats, and flooding half a kilometer inland.

There was large damage and loss of life at Concepcion, Chile’s top industrial city. Near the city of Valdivia, the earthquake and following aftershocks generated landslides which killed 18 people. At the port city of Valparaiso, a city of 200,000, many buildings collapsed. A total of 130,000 houses were destroyed--one in every three in the earthquake zone and nearly 2,000,000 people were left homeless.

Total damage losses, including to agriculture and to industry, were estimated(估计) to be over a half billion dollars. The total number of deaths related with both the tsunami and the earthquake was never found accurately for the region. Estimates of deaths reached between 490 to 5,7002 with no distinction(差别) as to how many deaths were caused by the earthquake and how many were caused by the tsunami. However, it is believed that most of the deaths in Chile were caused by the tsunami.

What is generally thought the main cause of deaths in Chile().

A. Landslides.

B. The tsunami.

C. Aftershocks.

D. The magnitude 9.5 earthquake.

已知某直线的坐标方位角为120°5’，则可知该直线的坐标增量为（）。

A.+ΔX.tif，+ΔY

B.+ΔX，-ΔY

C.-ΔX.tif，+ΔY

D.-ΔX，-ΔY

痛是由多种因素导致气血凝滞，阻塞不通而成，外科疾病热痛的特点是：（）。

A.皮色暗褐，或青紫而胀痛

B.痛无定处，忽此忽彼，走注甚速

C.皮色不红，不热，酸痛，得暖则痛缓

D.皮肤焮热，灼热疼痛，遇冷则痛减

E.肿势急，痛无止时，如有鸡啄，按之中软应指

下列哪一项体现的是现场调度在公交企业中的作用（）

A.人多车密、人少车稀、抽闲支忙、抽忙支急

B.按照行车作业计划和现场实际情况，机动灵活，及时有效地作出措施

C.正常运行，发挥车辆和劳动力配备作用，随时注意和调整能量平衡，车距平衡，弥补计划的不足

D.公共交通企业的运输设备，劳动力必须通过调度方式才能形成为乘客提供安全、快捷、方便、舒适的服务效能

女性，22岁。未婚，身高159cm，体重55kg， * * 发育好，至今月经未来，无任何不适，超声检查内生殖器发育正常。追问病史，童年曾患结核性腹膜炎，经治疗而愈。

闭经最可能的诊断是（）

A.先天性子宫缺如

B.子宫内膜结核

C.处女膜闭锁

D.垂体瘤

E.先天性无 * *