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【单选题】
启动时点火提前角是固定的,一般为( )左右。A.
15°
B.
10°
C.
30°
D.
20°
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【简答题】Paris is a romantic city. It’s a great _______ for couples who are in love.
【简答题】Complete the sentences with words from the boxes. destination excellent book path parking 1. Follow the _______ along the river, and you'll soon get to the park. 2. Can I _______ a table for fi...
【单选题】Paris is a romantic city. It ’ s a great ________ for couples who are in love.
A.
destination
B.
parking
C.
path
D.
excellent
【简答题】4 Paris is a romantic city. It’s a great_________ for couples who are in love. (destination ; excellent; book; path; parking)
【多选题】关于集中热容系统的时间常数,以下说法正确的是( )。
A.
时间常数的单位是秒（或分钟、小时）
B.
当时间等于时间常数时，物体的过余温度等于初始过余温度
C.
时间常数与物体的几何尺寸、物理性质和换热条件有关
D.
时间常数越大，物体越能迅速反应周围流体温度的变化
【单选题】听力原文：M：Paris is such a romantic place．I hope Dad call take you there to spend your wedding anniversary． W：The day your Dad takes me to Paris is the day pigs fly． Q：what does the woman mean? (19)
A.
Paris is not romantic enough.
B.
Paris is not modern enough.
C.
They're not very likely to go to Paris.
D.
It's impossible that they will go to Paris.
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