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【单选题】
下列关于气体液化循环说法正确的是( )。A.
气体液化循化是闭式循环
B.
气体液化循环的理想循环是指由可逆过程组成的循环，在循环的各个过程中不存在任何不可逆损失
C.
实际采用的气体液化循环所消耗的功，可以等于理论最小功
D.
循环所消耗的功等于等容过程消耗功与等熵膨胀过程得到功的差值
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举一反三
【简答题】A．There are only two kinds of intelce tests. B．Verbal ability refers to skill with words. C．A student with a high I.Q. is likely to be a top student. D．The most creative or talented people do not...
【简答题】A．There are Several small parties in the U.S. B．There are only two parties in the U.S. C．The most powerful party in the U.S. is the Democrats. D．The most powerful party in the U.S. is the Republicans.
【多选题】改革开放以来，我国工人阶级队伍发生了明显的变化，呈现出许多新的特点，这些新特点有( )
A.
队伍迅速壮大
B.
内部结构发生重大变化
C.
岗位流动加快
D.
工人阶级不再是领导阶级
【单选题】断句:There are only two windows in thatroom .
A.
There are only two windows / in that room .
B.
There / are only two windows / in that room .
C.
There / are only two windows in / that room .
D.
There are / only two windows in / that room .
【多选题】改革开放以来，我国工人阶级队伍呈现出的新特点有( )
A.
队伍迅速壮大
B.
内部结构发生重大变化
C.
内部结构没有发生重大变化
D.
岗位流动加快
E.
自主性大为增强
【多选题】改革开放以来我国工人阶级队伍发生了明显变化,呈现出许多新的特点( )。
A.
队伍迅速壮大
B.
内部结构发生重大变化
C.
岗位流动加快
D.
工人开始在政治舞台上发挥作用
【单选题】There are only two ways to gather information from human subjects about what they are currently doing, thinking, or feeling. One way is to【C1】______ what they do, the technique of observation the【C2】_...
A.
notice
B.
see
C.
discover
D.
watch
【简答题】A．There are several small parties in the U.S. B．There are only two parties in the U.S. C．The most powerful party in the U.S. is the Democrats. D．The most powerful party in the U.S. is the Republicans.
【单选题】Suppose there are only two people in the world. Each person’s production possibilities frontier also represents his or her consumption possibilities when
A.
they choose not to trade with one another.
B.
the frontiers are bowed out.
C.
neither person faces trade-offs.
D.
the frontiers are straight lines.
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