铁矿石中的脉石就是矿石中除铁以外的其他物质,主要有()、()、()和()等物质。
参考答案:CaO;MgO;SiO2;Al2O3
Perhaps, every county suffered from inflation once or more times. Inflation is an economic condition in (B1) prices for consumer goods (B2) , and the (B3) of money or purchasing power decreases. There are three causes of inflation. The first and most important cause may be excessive government spending. For example, in order to (B4) a war or carry (B5) social programs, the government may spend more money than it has received through taxes and other revenues, thus creating a deficit. In order to (B6) this deficit, the Treasury Department can simply (B7) the money supply by issuing more paper money to (B8) the debts of government. This increase in the money supply will cause the value of the dollar to (B9) decrease. The second cause of inflation occurs when the money supply increases faster than the supply of goods. (B10) people have more money, they will run out to buy popular goods (B11) televisions and computers, for example, and a shortage will result. Industry will then produce more, at higher prices, to (B12) demand. (B13) , if people think that the prices of popular goods are going up, they will buy and even borrow money at high (B14) rates to pay for them. Finally, if labor unions demand that workers’ wages (B15) or (B16) the high cost of living, industry will meet this demand and add other costs of production on the (B17) . (B18) summary, all of these causes can (B19) inflationary problems that can affect the welfare of a nation. However, of these three causes, (B20) government spending may be the most important.
A.satisfy
B.supply
C.plenty
D.comply
患者,因服毒昏迷不醒,入急诊室抢救,其家属不能准确地说出毒物的名称及性质,观察患者双侧瞳孔缩小。
护士应给患者摆放的体位是()
A.端坐位
B.半坐位
C.仰卧位
D.右侧卧位
E.左侧卧位