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【单选题】
下列器件中,实现逻辑加法运算的是A.
加法器
B.
半加器
C.
或门
D.
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【单选题】中国共产党的党徽党旗是中国共产党的象征和标志，党的十六大党章首次把党徽党旗作为专门一章加以规定，中国共产党党徽为（ ）组成的图案；党旗为旗面缀有金黄色党徽图案的红旗。
A.
麦穗和斧头
B.
麦穗和锤头
C.
镰刀和斧头
D.
镰刀和锤头
【单选题】—Where on earth have they gone? —I have no idea, but I wish I .
A.
know
B.
knew
C.
would know
D.
would have known
【简答题】On earth, where fog or rain would interfere with transmission, lasers would have to be beamed through evacuated pipelines to pr power loss.
【单选题】儿童室内温度、湿度,下列正确的是
A.
新生儿温度为22~24℃,湿度为50%~60%
B.
婴幼儿温度为20~22℃,湿度为50%~60%
C.
儿童温度为20~22℃，湿度为55%~65%
D.
婴幼儿温度为20~22℃，湿度为55%~65%
E.
儿童温度为18~20℃，湿度为55%~65%
【单选题】Woman: Where on earth are we? Man: Judging by all the traffic, I'd say we're near the heart of the downtown area. Question: What do we learn from the conversation?
A.
They have got to the busy area of the town.
B.
They have been held up by the traffic.
C.
They are not sure where they are.
D.
They find it hard to get out of the traffic.
【单选题】Where on earth have you been? We you back much earlier.
A.
were expecting
B.
are expecting
C.
had expected
D.
expect
【简答题】中国党徽为 和 组成的图案。
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