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【判断题】
热泵型空调器的除霜可通过换向阀来实现，不必另设化霜电热丝来化霜。A.
正确
B.
错误
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举一反三
【单选题】What do the prisoners use ramen to do?
A.
Smuggle cigarettes in the black market.
B.
Hire services from other prisoners.
C.
Exchange it for money.
D.
Bribe the cook.
【单选题】What is ramen often referred to by prisoners?
A.
Beds.
B.
Soups.
C.
Vegetables.
D.
Clothes.
【简答题】4-6-5 假设三相电路为Y- Δ 结构,已知电源的A相相电压相量VA(点标不上去)和负载阻抗Z(对称负载),请叙述线电流和相电流相量求解的步骤!
【单选题】Why was the baby choking?
A.
She had swallowed a toy.
B.
She had a bad cold.
C.
Her food had gone down the wrong way.
【单选题】Why is ramen replacing traditional cigarettes as money in American prisons?
A.
It is cheap and easier to get.
B.
It is valuable and difficult to get.
C.
It is healthier than cigarettes.
D.
It is more delicious than other food.
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