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【简答题】
有一只内阻为0.15Ω,量程为1A的电流表,现给它并联一只0.05Ω的小电阻,则这只电流表的量程扩大为( )。
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【简答题】完形填空。 When Julie was a child, she was a very big fan of animals. As a result, all she ever heard 1 was 'Julie, you should be a vet. You're going to be a great vet. That's what you should do.' 2 when s...
【单选题】She was heard ____ in the yard when I passed by.
A.
sing
B.
singing
C.
to sing
D.
Sung
【单选题】“ I know she was in because I heard her radio, but she didn’t open the door” “She ____ the bell.”
A.
mustn’t have heard
B.
may not have heard
C.
needn’t have heard
D.
can’t have heard
【单选题】She was often heard_now I heard her ( )in the next room
A.
to sing,singing
B.
sing ,to sing
C.
to sing ,sung
D.
to sing ,singing
【单选题】" I know she was in because I heard her radio. but she didn't open the door." "She_______ the bell . "
A.
mustn't have heard
B.
may not have heard
C.
needn't have heard
D.
can't have heard
【单选题】I heard that she apples if she was free the next day.
A.
was picking
B.
will pick
C.
is going to pick
D.
was going to pick
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