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【单选题】
某直流电路元件两端的电压 U=3V与通过它的电流 I=5A关联参考方向,求得该元件的功率为 ,由此判断该电路元件是____。A.
15，吸收
B.
15，输出
C.
3/5，吸收
D.
3/5, 输出
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反馈参考答案：
举一反三
【单选题】Who must be familiar with the Muster List and Emergency Instructions onboard?
A.
The Captain only.
B.
The officers only.
C.
All crew members and other personnel onboard.
D.
Passengers only.
【单选题】骨化性肌炎
A.
病变常呈特征性带状分布：增生活跃的纤维组织、类骨组织、成熟骨组织
B.
由软骨膜、软骨帽及骨性基底构成
C.
由纤维组织及周边成排骨母细胞围绕的骨小梁构成
D.
由软骨样组织、黏液样组织和纤维组织构成
E.
呈分叶状，由胞质红染、含空泡的软骨细胞及透明软骨基质构成
【单选题】Who must be familiar with the Muster List and Emergency Instructions onboard?
A.
The officers only
B.
All crew members and other personnel onboard
C.
The captain only
D.
Passengers only
【单选题】Who must be familiar with the list and Emergency Instructions onboard?________.
A.
The captain only
B.
The officers only
C.
All crew members and other personnel onboard
D.
Passengers only
【单选题】According to the ISPS Code, for a sailing ship, the following except__________ should be onboard.
A.
a ship security plan
B.
a ship security officer
C.
a company security officer
D.
certain onboard equipment
【单选题】【单选】Who must be familiar with the Muster List and Emergency Instructions onboard?
A.
The officers only
B.
All crew members and other personnel onboard
C.
The captain only
D.
Passengers only
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