下列关于PC机内存的叙述中，错误的是( )。A．已经启动运行的程序及其数据存放在内

在学完一篇逻辑结构严密的课文以后，勾画出课文的论点论据的逻辑关系图以帮助理解和记忆。这种学习方法属于( )。

A．编码与组织策略

B．精细加工策略

C．复述策略

D．元认知策略

常用的头孢菌素血清半衰期为1～2h，如手术延长到（）以上，或失血量超过1500m1，应补充一个剂量，必要时还可用第三次。

下列关于化学反应速率的说法错误的是    [ ]

A．化学反应速率是用于衡量化学反应进行快慢的物理量     

B．决定化学反应速率的主要因素是反应物本身的性质     

C．可逆反应达到化学平衡状态时，反应停止，正、逆反应速率都为零  

D．增大反应物浓度或升高反应温度都能加快化学反应速率

Which of the following statements about theories of the yield curve is most likely correct（）

A. A liquidity preference cannot be consistent with a flat term structure of interest rates.  B. The liquidity preference theory suggests that a downward-sloping term structure of interest rates is due to investors expecting short-term rates to decline, and although there is a maturity premium to consider, it is not large enough to offset the expectation of declining short-term rates. 

C. The pure expectations theory suggests that an upward-sloping term structure of interest rates is a consequence of investors expecting short-term rates to remain unchanged for a period of time, followed by investors expecting short-term rates to rise for a period of time.

油气初加工装置区任何设备故障，都必须尽快修复并上报也是防火措施之一。