起重机设置主隔离开关是为了保护（）。A．电动机 B．电气线路 C．人员安全

Taking buses in Beijing is       than taking a taxi.

A．more cheap

B．much cheaper

C．a little cheap

D．less cheaper

糖浆制剂应存放于（）

A．专用仓库

B．低温库

C．非药品库

D．阴凉库

E．常温库

近期，受海南国际旅游岛建设上升为国家战略的“利好消息”刺激，海南房地产市场快速升温。这说明[ ]

A、价值决定价格

B、供求影响价格

C、价值与价格相互决定

D、供求决定价格

Yellowstone Weather

Yellowstone National Park is at high altitude. Most of the park is above 7,500 feet (2,275 meters).
Yellowstone’s weather is unpredictable. In summer, it may be warm and sunny with temperatures in the high 70F. At night in any given month, the temperature may drop close to freezing. So it is best to come prepared for cold evenings and mornings, especially if you are camping or hiking. When you leave your campsite, please leave it prepared for possible thundershowers and wind.
A sunny warm day may become fiercely stormy with wind, rain, sleet and sometimes snow. Without enough clothing, an easy hike or boat trip can turn into a battle for survival.
Seasonal Weather Information
Spring
Cold and snow continue into May, although temperatures gradually climb Early in spring, daytime temperatures average in the 40F to 50F; by late May and June, they may reach the60F and 70F. Nighttime lows fall below freezing.
Summer
Daytime temperatures are usually in the 70F, occasionally reaching the 80F in the lower elevations (高度). Nights are cool, temperatures may drop in the 40F and 30F—sometimes even the 20F. June can be cool and rainy; July and August tend to be somewhat drier, although afternoon thundershowers are common.
Fall
Weather can be pleasant, although temperatures average 10-20 degrees lower than summer readings. Nighttime lows can fall into the teens and lower. Snowstorms increase in frequency as the weeks go by or towards the end of the fall season.
Winter
Temperatures often stay near zero throughout the day, occasionally reaching high in the20F. Subzero nighttime lows are common. Annual snowfall averages nearly 150 inches in most of the park. At higher places, 200-400 inches of snow have been recorded.

If you are planning to spend your holidays in Yellowstone National Park in summer, what should you take with you

A．Just some light clothing such as T shirts or skirts.
B．Just some warm clothing such as sweaters and coats.
C．Both light clothing and warm clothing.
D．Either light clothing or warm clothing.

关于肠痈的病因病理的论述，哪一项是错误的：

A．热壅
B．瘀凝
C．气滞
D．湿阻
E．血淤