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【多选题】
符合正向间接凝集抑制试验的是A.
检测标本中的抗原
B.
抗体为诊断试剂
C.
出现凝集为阳性
D.
不出现凝集为阳性
E.
抗原致敏
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反馈参考答案：
举一反三
【单选题】The man tried to pretend that he hadn't stolen the money but his expression ________.
A.
turned him down
B.
paid him off
C.
made him out
D.
gave him away
【单选题】______ from his expression, he is in low spirits.
A.
Judged
B.
Judging
C.
Being judged
D.
Having judged
【单选题】I can't help______his expression when he receives the gift.
A.
to imagine
B.
imagine
C.
imagining
D.
to have imagined
【简答题】__________ from his expression, he is in low spirits. A． Judged B. Judging C. Being judged D. Having judged
【多选题】以下关于房地产市场的说法正确的有（）
A.
由于不同类型的房地产在投资决策、规划设计、工程建设、产品功能、面向客户的类型等方面均存在较大差异，因此需要按照房地产的用途，将其分解为若干子市场。
B.
从市场营销的角度出发，房地产市场可以按照目标群体特征的不同分为低档、中低档、中档、中高档和高档物业市场。
C.
根据研究和决策的需要，可以将不同的房地产市场细分方法叠加起来，得到更细的子市场。
D.
市场所包括的地域范围越广，其研究的深度就越浅，研究成果对房地产投资者的实际意义也就越小。
【单选题】He must have heard of the bad news, ______can be perceived in his expression.
A.
as
B.
what
C.
while
D.
that
【简答题】He must have heard of the bad news, ________ can be perceived in his expression. A) as B) what C) while D) that
【单选题】某企业对一条生产线进行更新改造。该生产线的原价为120万元,已提折旧为60万元。改造过程中发生支出30万元。被替换部分固定资产的账面价值为15万元。该生产线更新改造后的成本为( )万元。
A.
75
B.
65
C.
135
D.
150
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