【单选题】When a market is in equilibrium, one will find that the:
A.
. quantity demanded is equal to zero.
B.
. quantity demanded is equal to quantity supplied.
C.
. quantity demanded is greater than quantity supplied.
D.
. quantity supplied is zero.
【单选题】After an accident the victim may go into shock and die. What should be done to help prevent shock?
A.
Slightly elevate the head and feet
C.
Keep the person lying down and at a comfortable temperature
D.
Give the person a stimulant to increase blood flow
【单选题】Sorry,but we cannot go to San Die90.Our cousins________to see US next Sunday.
【单选题】Do you think our great ship will _______ the hurricane?
【单选题】地藏菩萨的坐骑是一头类似狮子的的怪兽,此神兽是()
【单选题】下列叙述为不正确的是
D.
羟基与受体间以氢键相结合,故酰化后活性常降低
【判断题】在下面的程序段中,内层for语句的循环体中不存在中止循环的控制语句,也没有改变i和j的值的操作,则内循环体执行的总次数为20至30次。 int i,j; for(i=5;i;i--) for(j=1;j<5;j++) { ...... }
【单选题】下列有关植物叶绿体的成分和功能的叙述,正确的是 [ ]
A.
吸收光的色素位于囊状结构薄膜上,转化光能的色素位于基质中
B.
得到电子后的某些叶绿素a即成为强氧化剂,能使NADPH转变成NADP +
C.
分解水的部位在囊状结构薄膜上,利用ATP和NADPH的部位在基质中
D.
光能转化为电能后,能使某些叶绿素b不断得到电子和失去电子
【判断题】在下面的程序段中,内层for语句的循环体中不存在中止循环的控制语句,也没有改变i和j的值的操作,则内循环体执行的总次数为20至30次。 int i,j; for(i=5;i;i--) for(j=1;j<5;j++) { ...... }
【单选题】When a market is in equilibrium, ( )
A.
quantity demanded will equal quantity supplied.
B.
a shortage will be present.
C.
a surplus will be present.
D.
sellers will continue to expand production to increase revenues.