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【简答题】
变压器是既能变换 、变换 ,又能变换 的电气设备。变压器在运行中,只要 和 不变,其工作主磁通 Φ 将基本维持不变。
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举一反三
【多选题】Which sentences are appropriate?
A.
I've got a high temperature.
B.
I have no feeling in my fingers. They're numb.
C.
I've got a bad rash on my arm.
D.
My legs are very sore. I can't stop scratching.
【多选题】Which sentences are right?
A.
Living in the hotel of Kowloon is very convenient to shopping and transportation.
B.
The hotel can be booked on line in the mainland.
C.
The hotel is suitable for students as it is not expensive.
D.
The rooms of the hotel are very big and comfortable.
【多选题】Which sentences are non-agentive sentences?
A.
The match blew out.
B.
The toast burnt.
C.
The shop closed at 7pm.
D.
It rained yesterday.
【多选题】关于企业财务审计报告的作用,下列说法正确的有
A.
保护企业投资者利益的作用
B.
杜绝财务数据不真实事件的发生
C.
对企业财务会计报告起到监证作用
D.
证明注册会计师履行职责的情况，明确企业与注册会计师双方的责任
【简答题】已知函数 是奇函数，当 时， ，已知 有一根为 且 ，则 = .
【单选题】根据《起重设备安装工程施工及验收规范》对监理工作的要求，下列说法中不正确的是（）。
A.
大型、特殊、复杂的起重设备的吊装，应督促承包商编制完善的吊装方案并报监理单位审查
B.
对利用建筑结构柱、梁等作为吊装的重要承力点，必须由原设计单位进行审查
C.
起重设备安装前，应对通用桥式起重机、壁上起重机、冶金起重机等与建筑物之间的相关的最小安全距离（上方最小距离和侧方最小距离）进行核查并作出记录
【多选题】Which sentences are not correct?
A.
I didn't know which job I wanted I was too confused to decide.
B.
I didn't know which job I wanted, so I was too confused to decide.
C.
I didn't know which job I wanted, I was too confused to decide.
D.
I didn't know which job I wanted, so, I was too confused to decide.
【简答题】Wayne had a neighbor and fishing friend who
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