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【判断题】
通常我们将把电能转换成其他能量(机械能、光能、热能等)并在用电设备中真实消耗掉的功率称为无功负荷。A.
正确
B.
错误
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举一反三
【简答题】根据句意及首字母提示完成句子 1. The sun is s_______ all day. 2. He bought a train ticket with a r_______. 3. It is p_______ for him to work out the problem because he is very clever. 4. There are many clouds in the...
【单选题】The fruit here is s weet because there is a lot of _______. [ ]
A.
sun
B.
sunshine
C.
sunny
D.
suns
【简答题】根据句意及首字母提示完成单词。 1. The sun is shining (照耀). It's s______ today. 2. It was c______. The sun was behind the clouds. 3. —How's it going? —T______! —Why? —Because it is raining all day. 4. It's very cold ...
【单选题】Space is a dangerous place，not only because of meteors but also because of rays from the sun and other stars．The atmosphere again acts as our protective blanket on earth．Light gets through，and this is...
A.
it supplies the heat necessary for human survival
B.
it provides sufficient light for plant growth
C.
it protects him against the harmful rays from space
D.
it screens off the falling meteors
【简答题】This is “ good ” ozone because it protects us from the sun ’ s UV rays.
【单选题】— Excuse me, could you tell me where I could make a call? — Sorry, I’m a stranger here. — ________.
A.
Thanks a lot
B.
That’s a pity
C.
Thanks anyway
D.
I’m sorry to hear it
【单选题】Thompson believed that man is instinctively a sun-worshipper because
A.
the worship of the sun-god had clearly been the function of the temple
B.
all living things celebrate the sunrise
C.
the sunrise is the most magnificent of all phenomena
D.
it is natural for man to worship the sun and he has always done so
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