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【多选题】
线切割加工数控程序编制时,下列计数方向说法正确的有(    )。
A.
斜线终点坐标(Xa,Ya),当|Ya|﹥|Xa|时,计数方向取Gy
B.
斜线终点坐标(Xa,Ya),当|Xa|﹥|Ya|时,计数方向取Gy
C.
圆弧终点坐标(Xa,Ya),当|Xa|﹥|Ya|时,计数方向取Gy
D.
圆弧终点坐标(Xa,Ya),当|Xa|﹤|Ya|时,计数方向取Gy
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举一反三
【单选题】curb 的动词词义是
A.
路缘
B.
控制;抑制;约束
C.
脱去;去除
【判断题】If you think an AED can be greatly helpful, you could stop CPR and try to find one after two reps of 30 compressions.
A.
正确
B.
错误
【简答题】A.阻断黑质-纹状体通路的DA受体 B.减少突触间隙NA、5-HT的递质浓度 C.抑制单胺类递质的再摄取 D.阻断中脑-边缘系统通路的DA受体 E.激动CNS阿片受体 控制精神分裂症的急性发作:
【多选题】curb
A.
n.路缘
B.
v.控制
C.
v.抑制
D.
v.约束
【单选题】控制精神分裂症的急性发作:
A.
阻断黑质-纹状体通路的DA受体
B.
减少突触间隙NA、5-HT的递质浓度
C.
抑制单胺类递质的再摄取
D.
阻断中脑-边缘系统通路的DA受体
E.
激动CNS阿片受体
【单选题】听力原文:M: By the way, is it possible to get to Central Park by bus? W: Yes, but it doesn't go directly to the park. You have to change buses at least twice. Better take the subway instead. It's much les...
A.
Because it doesn't go directly to the park.
B.
Because it goes directly to the park.
C.
Because it's much slower than a bus.
D.
Because it's much less complicated that way and much quicker.
【单选题】()不是垄作的作用。
A.
增温
B.
保墒
C.
通风
D.
增大热容量
【单选题】听力原文:M: You know, Mr. Stevens doesn't want to be identified with the decision of the board. W: I know he is stubborn. What do we know about Mr. Stevens?
A.
He doesn't want to identify the decision.
B.
He doesn't want to accept the decision.
C.
He doesn't want to recognize the decision.
D.
He doesn't want to be involved in the decision.
【单选题】Stop! If you go any_____, you will be in danger.
A.
far
B.
farther
C.
further
D.
far away
【单选题】听力原文:W: Why is Alex applying for financial aid? Doesn't he have a lot of money? M: Not enough I guess. Q: What does the man mean? (14)
A.
Alex doesn't need a scholarship.
B.
Alex doesn't have much money.
C.
Alex doesn't know how to apply.
D.
Alex isn't applying for a scholarship.
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