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【单选题】
在酶联免疫吸附测定中，判断阴、阳性结果的标准是以（）为依据的A.
阴性对照
B.
阳性对照
C.
临界值血清
D.
以试剂盒说明书上提供的Cutoff值为准
E.
最终的颜色变化
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The motorways and new airport have improved the ________.
A.
capacity
B.
commuting
C.
infrastructure
【单选题】Eisenhower felt that the broad German motorways had better quality than the highways of America. 查看材料
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】Fog can be a hazard on the motorways in winter.
A.
protection
B.
indication
C.
immunity
D.
danger
【简答题】销售商品收到商业汇票一张，该笔业务应编制的记账凭证是（ ）。
【单选题】Motorways are, no doubt the safest roads in Britain. Mile【21】mile, vehicle for vehicle, you are much【22】likely to be killed or seriously injured than on an ordinary road. On【23】hand, if you do have a ...
A.
for
B.
after
C.
to
D.
by
【简答题】销售商品收到商业汇票一张，该笔业务应编制的记账凭证是收款凭证。（ ）
【单选题】Motorways are, no doubt the safest roads in Britain. Mile【41】mile, vehicle for vehicle, you axe much【42】likely to be killed or seriously injured than on an ordinary road. On【43】hand, if you do have a ...
A.
for
B.
after
C.
to
D.
by
【单选题】Motorways are, no doubt the safest roads in Britain. Mile 【C1】______ mile, vehicle for vehicle, you axe much 【C2】______ likely to be killed or seriously injured than on an ordinary road. On 【C3】______...
A.
for
B.
after
C.
to
D.
by
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