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【单选题】
对于一个100AH的蓄电池而言,以下说法不正确的是 ( ) 。
A.
以20A电流放电,5小时电能将耗尽
B.
蓄电池的容量为100AH
C.
这个蓄电池的电压为12V
D.
不能确定为何种类型的蓄电池
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D.
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A.
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B.
Britain
C.
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D.
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【单选题】The idea of test-tube babies may make you starry-eyed with delight at the wonders of modern medicine or bleary-eyed with considering the moral/legal implications of starting life in a laboratory. But ...
A.
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B.
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C.
Not mentioned
【单选题】The soldiers have to stand for hours without changing ________.
A.
position
B.
state
C.
situation
D.
condition
【简答题】手机中的VCO组件一般有4个引脚: 、 、 及 。
【单选题】The soldiers have to stand for hours without changing _______.
A.
position
B.
state
C.
situation
D.
location
【单选题】被联接件之一太厚不宜制成通孔,且需要经常拆卸时,往往采用
A.
螺栓联接
B.
螺钉连接
C.
紧定螺钉联接
D.
双头螺柱联接
【单选题】当两被联接件之一太厚不宜制成通孔,且联接不需要经常拆装时,宜采用的联接( )。
A.
螺栓
B.
螺钉
C.
双头螺柱
D.
紧定螺钉
【单选题】Since the villagers' houses have been damaged in the earthquake, the soldiers are helping them ______ tents (帐篷). [     ]
A.
put on
B.
put off
C.
put up
D.
put down
【单选题】当两个被联接件之一太厚不宜制成通孔,且联接不需要经常拆装时,宜采用( )。
A.
螺栓联接
B.
螺钉联接
C.
双头螺柱联接
D.
紧定螺钉联接
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