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【单选题】
观察法在选择观察对象时,要考虑与之配合的调查方式,如( )必须选择对总体具有代表性的单位。
A.
抽样调查
B.
全面调查
C.
典型调查
D.
重点调查
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参考答案：
举一反三
【单选题】How long did Max walk before he asked sebody to help?
A.
ten minutes
B.
five minutes
C.
thirty minutes
D.
twenty minutrs
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【单选题】Boxing was long viewed sickly. Generally forbidden by law in earlier days, the fighting was usually done with bare fists, and matches often lasted forty or fifty rounds. In 1882 John L. Sullivan, a fi...
A.
short and bloody
B.
usually spare-time competitions
C.
governed by strict rules
D.
cruel
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【单选题】How long does it take to get there on foot?
A.
Two minutes.
B.
Ten minutes.
C.
Twenty minutes.
D.
Thirty minutes.
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【单选题】How long was Alan's vacation?
A.
three days
B.
five days
C.
ten days
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【简答题】阅读理解。 Long, long ago there was a very foolish thief. Do you know what he did one day? When he wanted to steal(偷) the bell on his neighbour's door, he walked up to the door, took hold of (抓住) the bell ...
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【单选题】How long will it take?
A.
1 hour
B.
45 mins
C.
3 hours
D.
5 mins
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【判断题】舌下黏膜给药受到唾液冲洗作用弱,可制成生物黏附片延长作用时间
A.
正确
B.
错误
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【单选题】原棉选配时,常以若干队产地相同或性质接近的唛头作为主体成分,一般主体原棉在配棉成分中约占()左右。
A.
90%
B.
80%
C.
70%
D.
60%
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【单选题】—Our school in 1886. —Wa, it has a very long history. [     ]
A.
built
B.
was built
C.
is built
D.
has built
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【单选题】当微分时间为零时,比例微分调节器则成为_________调节器。
A.
积分
B.
双位
C.
微分
D.
比例
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相关题目：
【单选题】How long did Max walk before he asked sebody to help?
A.
ten minutes
B.
five minutes
C.
thirty minutes
D.
twenty minutrs
查看完整题目与答案
【单选题】Boxing was long viewed sickly. Generally forbidden by law in earlier days, the fighting was usually done with bare fists, and matches often lasted forty or fifty rounds. In 1882 John L. Sullivan, a fi...
A.
short and bloody
B.
usually spare-time competitions
C.
governed by strict rules
D.
cruel
查看完整题目与答案
【单选题】How long does it take to get there on foot?
A.
Two minutes.
B.
Ten minutes.
C.
Twenty minutes.
D.
Thirty minutes.
查看完整题目与答案
【单选题】How long was Alan's vacation?
A.
three days
B.
five days
C.
ten days
查看完整题目与答案
【简答题】阅读理解。 Long, long ago there was a very foolish thief. Do you know what he did one day? When he wanted to steal(偷) the bell on his neighbour's door, he walked up to the door, took hold of (抓住) the bell ...
查看完整题目与答案
【单选题】How long will it take?
A.
1 hour
B.
45 mins
C.
3 hours
D.
5 mins
查看完整题目与答案
【判断题】舌下黏膜给药受到唾液冲洗作用弱,可制成生物黏附片延长作用时间
A.
正确
B.
错误
查看完整题目与答案
【单选题】原棉选配时,常以若干队产地相同或性质接近的唛头作为主体成分,一般主体原棉在配棉成分中约占()左右。
A.
90%
B.
80%
C.
70%
D.
60%
查看完整题目与答案
【单选题】—Our school in 1886. —Wa, it has a very long history. [     ]
A.
built
B.
was built
C.
is built
D.
has built
查看完整题目与答案
【单选题】当微分时间为零时,比例微分调节器则成为_________调节器。
A.
积分
B.
双位
C.
微分
D.
比例
查看完整题目与答案
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