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【单选题】
关于电力拖动系统稳定性，下列说法正确的是A.
当电磁转矩和负载转矩相等的时候，系统处于稳定状态
B.
电力拖动系统稳定也就是电力拖动系统处于静止或匀速运转状态
C.
电力拖动系统稳定指的是当系统受到扰动，当扰动消失后，能够自动的恢复到原来的状态
D.
只要机械特性和负载特性曲线有交点，电力拖动系统就是稳定的
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举一反三
【单选题】The combining form " ankyl/o " means .
A.
bent or crooked; stiff
B.
tendon
C.
muscle
D.
lint
【单选题】The combining form " orth/o " means .
A.
wrist bone
B.
straight; normal
C.
lamina
D.
vertebra; backbone
【单选题】The combining form " articul/o " means .
A.
cartilage
B.
joint
C.
sac
D.
synovia; synovium
【单选题】The combining form " muscul/o " means .
A.
bent or crooked; stiff
B.
tendon
C.
muscle
D.
lint
【简答题】The underlined word “disassembly” in Paragraph 2 most probably means ______. A) putting together B) establishing C) manufacturing D) taking apart
【单选题】The combining form " myel/o " means .
A.
spinal cord; bone marrow
B.
inward curve
C.
laterally crooked
D.
hump
【单选题】The combining form " syndesm/o " means .
A.
bent or crooked; stiff
B.
tendon
C.
muscle
D.
lint
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