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【单选题】
将零件加热到一定温度(一般在850°C以上),经保温后放入介质中快速冷却的热处理工艺是()。A.
退火
B.
回火
C.
正火
D.
淬火
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【单选题】What catches the mother’s attention under the bed?
A.
A large envelope with family photographs, letters, greeting cards, and dolls from the parents.
B.
A large envelope with family photographs, letters, Christmas cards, and love notes from the parents.
C.
A large envelope with family photographs, letters, greeting cards, and love notes from the parents.
D.
A large envelope with family photographs, letters, birthday cards, and love notes from the parents.
【简答题】A．caught B．missed C．catches
【简答题】细磨球磨机所用的钢球的材质是（）
【单选题】If personal clothing catches fire, what will you do first?
A.
Call 119 and wait
B.
Stop, Drop & Roll, and then remove clothing
C.
Running for help
D.
Find water to extinguish the fire
【单选题】What does the fisherman do right after the bird catches a fish?
A.
He throws the dead fish back into the river.
B.
He gives the dead fish to the bird as its food.
C.
He draws back the bird onto the deck of the ship.
D.
He snatches the dead fish from the bird's beak.
【单选题】下列加点字的注音有误的一项是
A.
痕 迹 (hén) 痛 恨 (hèn) 贪 恋 (liàn) 贪 婪 (lán)
B.
刹 那 (chà) 刹 车 (shā) 痴 态 (chī) 蜘 蛛 (zhī)
C.
诡 计 (ɡuǐ) 桅 杆 (wéi) 倾 轧 (yà) 轧 钢 (yà)
D.
鞭 笞 (chī) 贻 误 (yí) 渺 茫 (miǎo) 缥 缈 (miǎo)
【简答题】在细磨球磨机中所用的钢球的材质是（）
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