皮皮学，免费搜题
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【多选题】
下列哪种方法可以减小系统误差？A.
对照试验
B.
空白试验
C.
校正仪器
D.
平行测定试验
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】内毛根鞘由内向外依次为
A.
内层、中层、外层
B.
鞘小皮、亨勒层、赫胥黎层
C.
鞘小皮、赫胥黎层、亨勒层
D.
亨勒层、赫胥黎层、鞘小皮
E.
赫胥黎层、亨勒层、鞘小皮
【简答题】The couple told housing officials that the three-bedroom flat simply was not ______ to scratch for their needs.
【单选题】听力原文： The three American officials arrived at an airport to the west of Baghdad on the special UN flight from Bahrain. According to diplomats, they were promptly and politely asked by the Iraqis to tu...
A.
were allowed to work unimpeded.
B.
were forbidden to work at all.
C.
were asked to leave.
D.
were promptly detained.
【简答题】亨延顿病可出现
【简答题】My_______（亲爱的）uncle，how are you?
【单选题】听力原文： NASA officials say, on Wednesday, one of three sensors (传感器) on Columbia's left-hand landing gear possibly indicated the device had begun to deploy (展开；配置) 30 seconds before all contact was lost...
A.
on Jan. 3rd
B.
on Feb. 1st
C.
on Mar. 4th
D.
on Jan. 2nd
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