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【多选题】
党在社会主义初级阶段基本路线的基本点是(  )
A.
坚持全面、协调、可持续发展
B.
坚持四项基本原则 
C.
坚持改革开放 
D.
坚持自力更生、艰苦创业 
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皮皮学刷刷变学霸
举一反三
【单选题】以下陈述,哪条不对
A.
精神障碍的躯体治疗主要包括药物治疗、电抽搐治疗
B.
药物是治疗严重精神障碍的主要措施
C.
电抽搐治疗在精神障碍急性期的治疗中具有重要地位
D.
胰岛素休克、神经外科治疗等仍是治疗重症精神障碍的主要措施
E.
心理治疗是精神障碍的治疗方法之一
【单选题】一束单色光通过厚度为 1cm 的有色溶液后,强度减弱 20% ,当它通过 5cm 厚的相同溶液后,强度将减弱( )
A.
42%
B.
58%
C.
67%
D.
78%
【单选题】The stable voltage of Zener diode is, D1 6V and D2 8V respectively, as shown in the figure below, what is the output voltage?【图片】
A.
8.7V
B.
6.7V
C.
3V
D.
20V
【多选题】切削热的主要来源有( )
A.
切削变形
B.
切屑与前刀面摩擦
C.
切屑与后刀面摩擦
D.
工件与后刀面摩擦
【单选题】An AND gate is checked for operation and the following readings are taken on the gate: input A = 0.2 V, input B = 4.5 V, input C = 0.4 V, output = 4.9 V. What might be wrong with the gate?
A.
Input C is too high.
B.
The output is stuck high; the chip is bad.
C.
The output is too low: it should be 5 V.
D.
Nothing is wrong with the gate.
【单选题】For this clipping circuit, what is the minimum output voltage when the diode is conducting?【图片】
A.
- 16.97 V
B.
+ 16.97 V
C.
- 17.97 V
D.
- 1.0 V
【单选题】______ he can recover soon, I don't mind how much money I have to pay.
A.
So long as
B.
So far as
C.
In case
D.
When
【简答题】Guest: That's fine. Shall I send you a ?(订金) Receptionist: No, you don't have to, you may pay on arrival.A. deposit
【简答题】What is the input and output logic level parameter V IL(max) , V IH(min) , V OL(max) and V OH(min) ?
【单选题】以下删除数据表abc的SQL语句,正确的是(      ) 。
A.
delete abc;
B.
delete table  abc;
C.
drop table  abc;
D.
drop  abc;
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