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【单选题】
Some birds can make several different sounds, each with meaning ______.A.
the same
B.
two
C.
different
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举一反三
【简答题】A．The man doesn't have to take the TOEFL test. B．The man doesn't have to take the English test. C．The man has got his admission from the graduate school. D．The man's adviser gave him high marks for hi...
【多选题】当限压式变量泵工作压力 p > p 拐点 时,随着负载压力上升,泵的输出流量( );当恒功率变量泵工作压力 p > p 拐点 时,随着负载压力上升,泵的输出流量( )。
A.
（ A）增加
B.
（ B）呈线性规律衰减
C.
（ C）呈双曲线规律衰减
D.
（ D）基本不变
【简答题】A．The man doesn't like the silk shirt, so he changed one. B．The man doesn't want to mend the white shirt, so he changed one. C．The man carelessly put on a wrong shirt, so he changed one. D．The man car...
【简答题】A. The man doesn't like any of the two coats. B. The man doesn't care which coat he is going to buy. C. The man likes a different coat. D. The man wants to choose a coat himself.
【简答题】A．She doesn't think the man could finish it. B．She doesn't think it is the man's fault. C．She doesn't think the man worked hard enough. D．She doesn't like the idea of going to parties.
【单选题】当限压式变量泵工作压力 p > p 拐点 时,随着负载压力上升,泵的输出流量呈线性规律衰减 ;当恒功率变量泵工作压力 p > p 拐点 时,随着负载压力上升,泵的输出流量( )。
A.
增加
B.
呈线性规律衰减
C.
呈双曲线规律衰减
D.
基本不变
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