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【判断题】
合伙型企业与公司型企业的主要区别是,前者要对债务承担连带无限责任,而后者对其债务承担有限责任,但它们都是法人A.
正确
B.
错误
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【简答题】The browser is software which sources documents,images,sound,video files and appli cations.
【单选题】TDCS voltage and current of information collection(Rated voltage: ~24V)
A.
The collection voltage shall be ~ 24 ± 4.8v. Acquisition current of each channel < 10mA
B.
The collection voltage shall be ~ 24 ± 2.4v. Acquisition current of each channel < 10mA
C.
The collection voltage shall be ~ 24 ± 3.6v. Acquisition current of each channel < 8mA
D.
The collection voltage shall be ~ 24 ± 5.0v. Acquisition current of each channel < 8mA
【单选题】The automatic voltage regulator is used to control the output voltage of the alternator at varying load conditions by_____.
A.
Varying the excitation field strength by regulating excitation voltage/current
B.
Regulating the voltage signal to the engine governor to regulate the speed to the desired load condition
C.
Supplying variable current to compounding and no load transformers in the alternator stator winding circuit
D.
All of the mentioned alternatives
【单选题】The following low-voltage appliances,which can play overcurrent protection, short circuit protection, loss of voltage and zero voltage protection
A.
fuse
B.
speed relay
C.
Low-voltage circuit breaker
D.
time relay
【简答题】设总体 X 和 Y 都服从正态分布N(0, 3 2 ),而 和 分别是来自总体 X 和 Y 的简单随机样本,则统计量 服从 自由度为 _____的t分布.
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