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【多选题】
关于发动机的功能阐述对的有A.
发动机是一种能够把热能转化为机械能的机器
B.
内燃机通常是把化学能转化为机械能
C.
靠燃料在气缸内燃烧推动活塞作功来驱动汽车前进的
D.
通过液体或气体燃料燃烧转变为机械能驱动汽车前进
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【单选题】Which of the following is NOT true of the panel of the Council on Foreign Relations?
A.
There are 26 members on the panel.
B.
Its base is in New York.
C.
Its members are from Europe and the United States.
D.
It is governmental.
【简答题】电流通过导体时,产生热量的大小,与电流强度的( ) 、导体电阻大小以及通过电流的时间成正比。A. )平方; (B)立方; (C)4次方; (D)5次方。
【单选题】What is true to the fact in America?
A.
There are more and more members in a family．
B.
There are less and less members in a family.
C.
There is an increasing number of grandparents who refuse to look after their grandchildren．
D.
There is an increasing number of grandparents who live separately from their children．
【多选题】在该项业务中，当S行履行付款义务后，如果申请人无力付款赎单，开证行（ ）。 查看材料
A.
有权处理货物和单据
B.
无追索权
C.
在处理单据或货物后仍有损失，有权向申请人追索
D.
在处理单据或货物后仍有损失，有权向出口方追索
【单选题】Which of the following is true according to the text?
A.
Ashanthi needs to receive gene-therapy treatment constantly.
B.
Despite the huge funding, gene researches have shown few promises.
C.
Therapeutic genes are carried by harmless viruses.
D.
Gene-doping is encouraged by world agencies to help athletes get better scores.
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