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【判断题】
已知某砂土测得e=0.980,e max =1.35,e min =0.850,则其相对密度Dr为0.74。A.
正确
B.
错误
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举一反三
【单选题】When do children start school in the man's country?
A.
At seven.
B.
At six.
C.
At five.
【单选题】--- I phoned you at six yesterday afternoon, but nobody answered. --- Oh, I __________a walk with my parents near the river.
A.
am taking
B.
was taking
C.
took
D.
will take
【简答题】收缩力最强的是
【判断题】动态扫描的原理是:通过一个扫描控制电路,对需要显示的结果进行逐个扫描,使七段数码管逐个进行显示。只要每个管子扫描频率超过人的眼睛视觉暂留频率,就可以达到某一时刻点亮 1个七段数码管,却能享有所有七段数码管同时显示的视觉效果,而且显示也没有闪烁抖动,从而间接实现显示结果的同时显示。
A.
正确
B.
错误
【简答题】苏维埃区域工运最高领导机关是( )
【单选题】—I called you at six o'clock yesterday evening but there was no reply. —Oh, I'm sorry. I _______ dinner at my friend's. [ ]
A.
was having
B.
is having
C.
had
D.
have
【判断题】动态扫描显示的原理是:通过一个扫描控制电路,对需要显示的结果进行逐个扫描,使显示数码管逐个进行显示,但要求显示数码管的扫描频率必须大于24HZ以上。
A.
正确
B.
错误
【简答题】听句子，选答语。 ( )1. A. I'm five. ( )2. A. Nice to meet you, too. ( )3. A. I have six. ( )4. A. It's Sunday today. ( )5. A. They're under the bed. B. Fine, thanks. B. See you. B. I'm six...
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