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【单选题】
在△ABC中,tanA是以-4为第3项,4为第7项的等差数列的公差;tanB是以 1 3 为第3项,9为第6项的等比数列的公比,则该三角形为(  )
A.
锐角三角形
B.
直角三角形
C.
钝角三角形
D.
等腰三角形
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参考答案:
举一反三
【单选题】垄断利润主要是通过垄断组织制定的垄断价格来实现的。垄断价格等于
A.
生产价格加平均利润
B.
生产价格加垄断利润
C.
成本价格加垄断利润
D.
成本价格加超额利润
【多选题】在MSR路由器RTA上执行displaospfinterface命令后,路由器输出如下: 从以上输出可以判断出()
A.
RTA的OSPF进程1的RouterID是2.2.2.2
B.
当前接口的IP地址是192.168.1.1
C.
当前接口的OSPF网络类型是Broadcast
D.
RTA在该接口所处的网段中被选举为DR
【多选题】有关 肾素的描述正确的有 ( )
A.
是肾脏近球小体(球旁器)中的颗粒细胞分泌的
B.
使肾小球滤过率减少
C.
引起血中血管紧张素Ⅱ增多
D.
引起血中醛固酮增多
E.
引起血压升高
【判断题】老型汽车空调中风机调速采用调速模块的方式。
A.
正确
B.
错误
【多选题】有关 肾素的描述正确的有 ( )
A.
是肾脏近球小体中的近球细胞分泌的
B.
使肾小球滤过率减少
C.
引起血中血管紧张素Ⅱ增多
D.
引起血中醛固酮增多
E.
引起血压升高
【单选题】可作为设计师极好的灵感源泉
A.
Had it not been for the contribution that each of you has made
B.
immerse yourself in a language learning environment
C.
serve as an excellent source of inspiration for designers
D.
precluded from health care services
【单选题】听力原文:M: Excuse me, can you tell me if this bus goes to the People's park? W: I'm afraid I can't. I'm a stranger here myself. Q: Why can't the woman give the man directions? (5)
A.
Because she is too weak to say much.
B.
Because she is not familiar with the area.
C.
Because she has lived here for a 'long time.
D.
Because she has never taken the bus before.
【单选题】听力原文:M: Excuse me, can you tell me if this bus goes to the city center? W: No, I'm afraid I can't. I've only been here for a few days myself. Why can't the woman give the man direction?
A.
She is not familiar with the place.
B.
She has never heard the place.
C.
She has never taken the bus before.
【单选题】听力原文:M: Maria, I know you've arrived here only recently. Can you tell me if there is anything that has surprised you about British people? W: People here are more serious than that in Spain. Spanish p...
A.
England.
B.
Poland.
C.
Spain.
【判断题】回归系数估计中使用最广泛的方法是最小二乘法。
A.
正确
B.
错误
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