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【多选题】
知识类型包括为( )A.
内敛性知识和外烁性知识
B.
人文知识和科学知识
C.
显性知识和隐性知识
D.
感性认识和理性认识
E.
直接经验和间接经验
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【简答题】正弦交流电路中某负载的电压为500V,电流为10A,电压比电流落后30度,则有功功率、无功功率、视在功率分别为多少?
【简答题】. New York Helmsley Hotel New York City, NY KAYAK members are specially offered the New York Helmsmen Hotel, a world – class hotel located in the heart of Midtown Manhattan, within walking distance of...
【单选题】—How many members are there in the English Drama Club?— the members is twenty, of them are
A.
—How many members are there in the English Drama Club? —____ the members is twenty, ____ of them are girls. A．A number of; three-fourth
B.
A number of; three-fourths
C.
The number of; three-fourth
D.
The number of; three-fourths
【简答题】正弦 交流电路中某负载的电流和电压在关联参考方向下分别为: u ( t )= 220 √ 2sin314tV ; i ( t )= 10 √ 2sin ( 314t - 60 O ) A ,则表示它 们的相量(复数)分别为 Ù = V , Ì = A 。
【单选题】In Canada, the Senate members are appointed from geographic regions while members of the House of Commons are elected by popular vote for a period not to exceed______ years.
A.
four
B.
five
C.
six
D.
seven
【单选题】John is one of the staff members who ___to be sent abroad for further study.
A.
is going
B.
are going
C.
have been going
D.
has been going.
【简答题】A．member government B．members government C．member governments D．members governments
【单选题】The disagreement among the family members ______over with time.
A.
cured
B.
secured
C.
mended
D.
healed
【单选题】在正弦交流电路中,某负载的有功功率 P=1000W ,无功功率 Q=577var ,则该负载的功率因数为 ( )
A.
0.5
B.
0.577
C.
0.707
D.
0.866
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