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【简答题】
从晶闸管的伏安特性曲线可知,晶闸管具有 的特性。
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举一反三
【单选题】Where did the man lead the woman to first in order to make things easier?
A.
The top of the hill.
B.
The gentle slope of the hill.
C.
The foot of the hill.
D.
The side of the hill.
【多选题】两距离定位时,两圆弧位置线通常交于两点,其中只有一个是正确的观测船位,下列哪种判定观测船位的方法是正确的?
A.
靠近推算船位的一个交点是正确的观测船位
B.
根据所测物标与船位间的相对位置关系来确定那个是观测船位
C.
连续多次定位，根据船舶的航迹分布情况来确定观测船位
D.
根据船舶的航向来确定观测船位
【单选题】Where did the man plan to go on Saturday?
A.
To work
B.
To a clothing store
C.
To a sporting event
D.
To a party for a colleague
【简答题】Where did the man lose his card? At _____________ in Oxford Street.
【简答题】Where did the man in Los Angeleswant to go and where did he arrive?
【单选题】---- What did the man say to you? ---- He ________ me where the post office ________.
A.
tells; is
B.
asks; is
C.
said; was
D.
asked; was
【简答题】直流电动机按类型注意分为__________、__________。
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