扑救地铁火灾实施内攻行动时，作战人员要（）前进。A、低姿匍匐 B、梯队交替掩护

下列说法中正确的是（　　）

A．饱和石灰水中加入一定量生石灰，温度明显升高，所得溶液的pH增大

B．AgCl悬浊液中存在平衡：AgCl（s）

Ag⁺（aq）+Cl^-（aq），往其中加入少量NaCl粉末，平衡向左移动，溶液中离子的总浓度会减小

C．AgCl悬浊液中加入KI溶液，白色沉淀变成黄色，证明此条件下K_sp（AgCl）＞K_sp（AgI）

D．硬水中含有较多的Ca²⁺、Mg²⁺、HCO₃^-、SO₄^2-，加热煮沸可以完全除去其中的Ca²⁺、Mg²⁺

患者，女性，26岁。咳嗽、乏力、食欲减退1个月，低热、盗汗10天，查体两肺未发现阳性体征，胸部X线示右肺上叶尖段片状模糊阴影伴空洞形成。

若患者大咯血，抢救时需特别注意的是（）。

A.保持呼吸道通畅

B.患侧卧位

C.血压监测

D.慎用镇咳、镇静剂

E.估测咯血量

抄表卡片的作用是什么？

In the second half of each year, many powerful storms are born in the tropical Atlantic and Caribbean seas. Of (91) , only about half a dozen (92) the p, circling winds of 75 miles per hour or more that give them hurricane status, and several usually (93) their way to the coast. There cause millions of dollars of (94) , and bring death to (95) numbers of people.
The great storms that hit the coast start (96) innocent circling disturbances hundreds, even thousands of miles out to sea. As they travel aimlessly over water (97) by the summer sun, they are carried westward by the (98) winds. When conditions are just (99) , warm, moist air flows in (100) the bottom of such a disturbance, moves upward through it and comes out at the top. In the (101) , the moisture in this warm air produces rain, and with it the heat is converted to energy in the form of p winds. As the heat increases, the (102) hurricane begins to swirl in a counter-clockwise motion.
The average life of a hurricane is only about nine days, but it contains almost (103) power than we can imagine. The energy in the heat released by a hurricane’s rainfall in a(n) (104) day would (105) the entire electrical needs of the United States for more than six months. Water, not wind, is the main (106) of death and destruction in a hurricane. A(n) (107) hurricane brings 6-to 12-inch downpours (108) in sudden floods. (109) is the powerful movement of the sea-the mountains of water moving toward the low-pressure hurricane center. The water level (110) as much as 15 feet above normal as it moves toward shore.

A．normal

B．typical

C．ordinary

D．natural

下列属于低压控制电器的是（）。

A.熔断器

B.刀开关

C.自动开关

D.接触器