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【单选题】
电器着火时下列不能用的灭火方法是()。A.
用沙土灭火
B.
用四氯化碳或1211灭火器进行灭火
C.
用水灭火
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皮皮学刷刷变学霸
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【单选题】听力原文：M: Excuse me. Have you been waiting long? W: About ten minutes. M: Did you notice whether the number seven bus has gone by? W: Not while I've been standing here. I'm waiting for the number seven ...
A.
Rainy and cool.
B.
Windy.
C.
Hot and dry.
D.
Cold and dry.
【单选题】听力原文：M: Excuse me. Have you been waiting long? W: About ten minutes. M: Did you notice whether the number seven bus has gone by? W: Not while I've been standing here. I'm waiting for the number seven ...
A.
She is waiting for the man.
B.
She is waiting for her mother
C.
She is waiting for a bus.
D.
She is waiting for it to stop mining.
【简答题】螺纹牙型是指通过螺纹轴线的剖切平面截切而得的螺纹轮廓形状。常用的有三角形、 、矩形、锯齿形螺纹。其中 螺纹使用最广泛。
【单选题】听力原文：M: Excuse me. Have you been waiting long? W: About ten minutes. M: Did you notice whether the number seven bus has gone by? W: Not while I've been standing here. I'm waiting for the number seven ...
A.
Cold.
B.
Very hot.
C.
Cooler.
D.
Drier.
【单选题】听力原文：M: Excuse me. Have you been waiting long? W: About ten minutes. M: Did you notice whether the number seven bus has gone by? W: Not while I've been standing here. I'm waiting for the number seven ...
A.
She is waiting for the man.
B.
She is waiting for a bus.
C.
She is waiting for her mother.
D.
She is waiting for it to stop raining.
【单选题】听力原文：M: Excuse me. Have you been waiting long? W: About ten minutes. M: Did you notice Whether the number seven bus has gone by? W: Yes, it is. I wish that it would rain and cool off. M: Me too. This ...
A.
She is waiting for the man.
B.
She is waiting for her mother.
C.
She is waiting for a bus.
D.
She is waiting for it to stop raining.
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