晚期产后出血指（）。 A.分娩后12小时后在产褥期内发生的子宫大量出血 B.分娩24

读经纬网图回答：

（1）图中A点的地理位置是：_____________。

（2）图示范围应该有一条东西半球的分界线是________。

（3）B点在南北半球的_______半球。

（4）A在C的_______方向，C在B的_______方向。

（5）D在东西半球的_______半球，E在东西半球的_______半球。

毒品主要是指鸦片、吗啡、海洛因、冰毒、大麻、可卡因等．目前，我国政府重点监控、查禁的毒品是______，它是用______提炼而成的一种白色粉状物．

The price of maple syrup has jumped front 22 dollars a gallon three years ago to 40 dollars a gallon today. It can be concluded that maple-syrup harvesters have been artificially inflating prices and that governmental price regulations are necessary to control rising prices.
Which of the following, if true, casts the most doubt on the conclusion drawn above

A．The government already requires maple-syrup harvesters to submit their facilities to licensing by the health department.

B．Insect infestation and drought have stunted the growth of syrup-producing maple trees and caused leas-abundant syrup harvests.

C．Maple syrup is produced in rural areas that suffer from high unemployment.

D．Technological improvements in maple-syrup harvesting have reduced production costs.

E．(E) Maple-syrup prices have risen many times in the past, though never before at the rate recently observed.

进入传感器的辐射强度反映在图像上就是（）。辐射强度越大，（）越大。该值主要受两个物理量影响：一是太阳辐射照射到地面的辐射强度，二是（）。

电气着火，扑救时，首先要切断电源，防止触电，然后用泡沫，干粉，二氧化碳等救。