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【判断题】
计算混凝土的水胶比时,要考虑使用水泥的实际强度。( )A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】Experts say (walk) is a good form of exercise for both old and young.
【单选题】频率为 50 Hz ,传播速度为 300 m/s 的平面简谐波。波线上距离小于波长的两点,振动的相位差为 0.5π ,则此两点相距
A.
3.0m
B.
2.0m
C.
1.5m
D.
0.5m
【单选题】听力原文：M: Can you help me? That's my first time to do it. W: It's easy. All you should do is to put the worm on the hook, loosen the line and cast it. Q: What are they doing? (17)
A.
Sailing a boat.
B.
Catching a worm.
C.
Fishing.
D.
Hanging clothes.
【单选题】听力原文：M: Can you help him? W: Certainly, what's wrong? M: His kite is broken. Q: What's wrong with his kite? (21)
A.
It's bad.
B.
It's good.
C.
It's broken.
【单选题】听力原文：W: Can I help you sir? M: Yes, can you show me the way to Gate nine for flight 910 to Hong Kong? I am quite confused here. Q: Where does the conversation most probably take place? (15)
A.
On a busy street.
B.
In a Hong Kong hotel.
C.
At an airport.
D.
At a booking office.
【单选题】频率为 50 Hz,传播速度为300 m/s的平面简谐波。波线上距离小于波长的两点,振动的相位差为0.5π,则此两点相距
A.
1.5m
B.
2.0m
C.
3.0m
D.
4.5m
【单选题】听力原文：W: John, can you help me? I couldn't work out this math problem. M: I'm sorry. You can hardly expect me to do that. Q: What does the man mean? (18)
A.
He doesn't think he'll do that.
B.
He finds it difficult to do that.
C.
He has no time to do that.
D.
He knows nothing about math.
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