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【简答题】
船员职务规则规定,三副的基本职责应包括________。
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举一反三
【单选题】The realization that the most economically significant sanctions cannot survive poses a new danger: that effective sanctions will be allowed to lapse, ______ a series of token measures.
A.
leaving in place
B.
setting aside
C.
taking into account
D.
making room for
【单选题】题 1 图示稳压电路,稳压管 V 1 与 V 2 相同,其稳压值 U Z =5.3V 、正向压降 0.7V ,输出电压 U 0 为 ( )。
A.
1.4V
B.
4.6V
C.
5.3V
D.
6V
【简答题】__________。 [A]poses [B]produces [C] makes [D] brings
【单选题】The population which is top-heavy with older people poses a problem to ______.
A.
the government
B.
the economy
C.
the workforce
D.
All of the above.
【简答题】The population which is top—heavy with older people poses a problem to _______.
【单选题】图示稳压电路,稳压管 V 1 与 V 2 相同,其稳压值 U Z =5.3V 、正向压降 0.7V ,输出电压 U 0 为 ( )
A.
1.4V
B.
4.6V
C.
5.3V
D.
6V
【单选题】The energy produced by the sun ______.
A.
is easy to store
B.
poses similar problems to the other newer energy sources
C.
poses very few problems
D.
poses different problems from the other newer energy sources
【简答题】如 题图示稳压电路,稳压管 V 1 与 V 2 相同,其稳压值 U Z =5.3V 、正向压降 0.7V , 求 输出电压 U 0 。
相关题目：
【单选题】图示稳压电路,稳压管 V 1 与 V 2 相同,其稳压值 U Z =5.3V 、正向压降 0.7V ,输出电压 U 0 为 ( )
A.
1.4V
B.
4.6V
C.
5.3V
D.
6V
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