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【多选题】
电力系统的无功电源主要包括( )。A.
发电机
B.
电容器和调相机
C.
静止补偿器和静止调相机
D.
并联电抗器
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【简答题】装载型钢及管材超出侧墙（板）高度在1m以内时，捆1道腰线，超过1m时，捆2道腰线，（）。
【单选题】The shaft consists of the crank shaft, the intermediate shaft and the propeller shaft. They are connected to each other by means of _____.
A.
flanges
B.
welding
C.
couple ring
D.
screws
【简答题】学前儿童耳有何特点?
【单选题】The shaft consists of the crank shaft, the intermediate shaft and the propeller shaft.They are connected to each other by means of ____
A.
flanges
B.
couple ring
C.
screws
D.
welding
【单选题】－－I ____ becoming an astronaut (宇航员) when I was at school. －－ Really? Do you still think it wi
A.
12.--I ____ becoming an astronaut (宇航员) when I was at school. -- Really? Do you still think it will ____ ? A．was dreaming of…come true
B.
was dreaming…come true
C.
was dreaming of…come truth
D.
was dreaming…come truth
【单选题】--- Do you know when he tomorrow? --- Don’t worry. I think as soon as he , he will give you a call.
A.
will come; will come
B.
will come; comes
C.
comes; will come
D.
comes; comes
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