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【多选题】
某办公楼建筑面积6000m2,主体结构为现浇钢筋混凝土框架结构,混凝土为预拌混凝土,组合钢木模板,柱混凝土强度等级为C30。在主体结构施工过程中,第三层柱因模板拼缝不严,造成有多处的孔洞、蜂窝和麻面。经现场混凝土强度检测,混凝土强度满足设计要求,但修补造成经济损失1.8万元。下列选项对事故的描述符合本工程质量事故的是[ ]。
A.
一般事故
B.
重大事故
C.
经济损失一次在1万元（或5000元）以上，10万元以下
D.
人员重伤2人以下且无死亡人员的事故
E.
较大事故
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【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 ( )
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相关题目：
【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?
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C.
six
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查看完整题目与答案
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A.
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B.
are going
C.
have been going
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has been going.
查看完整题目与答案
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查看完整题目与答案
【单选题】The disagreement among the family members ______over with time.
A.
cured
B.
secured
C.
mended
D.
healed
查看完整题目与答案
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