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【单选题】
空调在运行中,如果低压表指示过高,高压表指示过低,说明( )。
A.
蒸发器有故障
B.
膨胀阀有故障
C.
压缩机有故障
D.
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参考答案:
举一反三
【单选题】The manager came over and asked the customer how .
A.
did the quarrel came about
B.
the quarrel had come about
C.
had the quarrel come about
D.
had the quarrel came about
查看完整题目与答案
【简答题】In our company, great changes (take place) ______ since the new manager came.
查看完整题目与答案
【单选题】图示两均质细杆OA与AB铰接于A,在图示位置时,OA杆绕固定轴O转动的角速度为ω,AB杆相对于OA杆的角速度亦为ω,O、A、B三点位于同一铅直线上。已知OA和AB两杆的质量均为m,它们的长度均为L,则该系统此时对O轴的动量矩大小为I O 为
A.
I O =21mL 2 ω/6;
B.
I O =11mL 2 ω/4;
C.
I O =8mL 2 ω/3;
D.
I O =5mL 2 ω/3.
查看完整题目与答案
【判断题】物质文明和精神文明的提高对旅游审美需求的促进。
A.
正确
B.
错误
查看完整题目与答案
【单选题】下列有关癌基因的论述正确的是
A.
癌基因只存在病毒中
B.
细胞癌基因来源于病毒基因
C.
有癌基因的细胞迟早都会发生癌变
D.
细胞癌基因是正常基因的一部分
查看完整题目与答案
【单选题】The manager came over and asked the customer how ______.
A.
did the quarrel came about
B.
the quarrel had came about
C.
had the quarrel came about
D.
had the quarrel come about
查看完整题目与答案
【单选题】That family __________ came from France. Now they have a great amount of influence over the people of South Africa.
A.
finally
B.
formally
C.
definitely
D.
originally
查看完整题目与答案
【单选题】The manager promised to have my complaint ______.
A.
looked through
B.
looked into
C.
looked over
D.
looked after
查看完整题目与答案
【单选题】不可能成为诱导免疫耐受的因素是
A.
颗粒性抗原
B.
超大剂量抗原
C.
口服抗原
D.
极小剂量抗原
查看完整题目与答案
【单选题】图示两均质细杆OA与AB铰接于A,在图示位置时,OA杆绕固定轴O转动的角速度为ω,AB杆相对于OA杆的角速度亦为ω,O、A、B三点位于同一铅直线上。已知OA和AB两杆的质量均为m,它们的长度均为L,则该系统此时对O轴的动量矩大小为G O 为()
A.
A
B.
B
C.
C
D.
D
查看完整题目与答案
相关题目:
【单选题】The manager came over and asked the customer how .
A.
did the quarrel came about
B.
the quarrel had come about
C.
had the quarrel come about
D.
had the quarrel came about
查看完整题目与答案
【简答题】In our company, great changes (take place) ______ since the new manager came.
查看完整题目与答案
【单选题】图示两均质细杆OA与AB铰接于A,在图示位置时,OA杆绕固定轴O转动的角速度为ω,AB杆相对于OA杆的角速度亦为ω,O、A、B三点位于同一铅直线上。已知OA和AB两杆的质量均为m,它们的长度均为L,则该系统此时对O轴的动量矩大小为I O 为
A.
I O =21mL 2 ω/6;
B.
I O =11mL 2 ω/4;
C.
I O =8mL 2 ω/3;
D.
I O =5mL 2 ω/3.
查看完整题目与答案
【判断题】物质文明和精神文明的提高对旅游审美需求的促进。
A.
正确
B.
错误
查看完整题目与答案
【单选题】下列有关癌基因的论述正确的是
A.
癌基因只存在病毒中
B.
细胞癌基因来源于病毒基因
C.
有癌基因的细胞迟早都会发生癌变
D.
细胞癌基因是正常基因的一部分
查看完整题目与答案
【单选题】The manager came over and asked the customer how ______.
A.
did the quarrel came about
B.
the quarrel had came about
C.
had the quarrel came about
D.
had the quarrel come about
查看完整题目与答案
【单选题】That family __________ came from France. Now they have a great amount of influence over the people of South Africa.
A.
finally
B.
formally
C.
definitely
D.
originally
查看完整题目与答案
【单选题】The manager promised to have my complaint ______.
A.
looked through
B.
looked into
C.
looked over
D.
looked after
查看完整题目与答案
【单选题】不可能成为诱导免疫耐受的因素是
A.
颗粒性抗原
B.
超大剂量抗原
C.
口服抗原
D.
极小剂量抗原
查看完整题目与答案
【单选题】图示两均质细杆OA与AB铰接于A,在图示位置时,OA杆绕固定轴O转动的角速度为ω,AB杆相对于OA杆的角速度亦为ω,O、A、B三点位于同一铅直线上。已知OA和AB两杆的质量均为m,它们的长度均为L,则该系统此时对O轴的动量矩大小为G O 为()
A.
A
B.
B
C.
C
D.
D
查看完整题目与答案
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