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【单选题】
在工程设计中，异步电动机的起动方式应首选全压起动，但由于各种条件限制实际使用中常常采用电抗器降压起动和自耦变压器降压起动方式。假如全压起动时起动电压即为标称电压Un，起动电流为Iq，起动转矩为Mq。电抗器降压起动时起动电压与标称电压之比为k。自耦变压器降压起动时，变压比即为起动电压与标称电压之比k。请分别回答采用电抗器和自耦起动方式的下列问题。降压起动电抗器的电抗值为（）Ω。（选最接近的一个数据）A.
1.69
B.
9.6
C.
0.169
D.
0.96
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【单选题】I. Match the author or the literary works with historical periods or intellectual movements or literary schools: (10 scores, one for each question) A. Transcendentalism 1. The Adventures of Huckleberr...
A.
6
B.
9
C.
8
D.
2
E.
7
F.
3
G.
1
H.
4
I.
10
J.
5
【单选题】The blues was first performed by the black people of New Orleans. A. the color of the clear sky B. a slow, sad style of music C. a fast, happy style of music
A.
the color of the clear sky
B.
a slow, sad style of music
C.
a fast, happy style of music
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A.
2,2,2.
B.
3,2,1.
C.
2,2,1.
D.
1,2,2.
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