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【单选题】
IV型超敏反应可发生在下列哪种疾病A.
哮喘
B.
肺结核
C.
类风湿性关节炎
D.
Graves病
E.
血清病
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【单选题】我国水准仪按精度分为：DS05、DS1、DS3和 DS10四个等级，其下标数字表示精度等级，如DS3型水准仪的“3”表示（ ）。
A.
每千米水准测量高差中数偶然中误差为 ± 3mm
B.
水准仪的型号
C.
水准仪的误差值是3mm
D.
仪器的最小读数为3mm
【单选题】It___ Mike and Mary who helped the old man several days ago.
A.
was
B.
are
C.
were
D.
is
【单选题】It__Mike and Mary who helped the old woman yesterday
A.
was
B.
are
C.
ere
D.
had been
【单选题】It Mike and Mary who helped the old man a few days ago.
A.
was
B.
are
C.
were
D.
had been
【单选题】工程测量中一般使用DS3型微倾式普通水准仪，其中数字“3”表示该仪器精度为每公里往返测量高差中数的（ ）中误差为13mm。
A.
偶然
B.
人为
C.
系统
D.
仪器
【单选题】It Mike and Mary who helped the old man several days ago.
A.
was
B.
were
C.
are
D.
had been
【简答题】工程测量中较多使用DS3型微倾式普通水准仪，数字3表示该仪器精度，即每公里往返测量高差中数的偶然中误差为（ ）。
【单选题】It__Mike and Mary who helped the old man several days ago.
A.
was
B.
are
C.
were
D.
had been
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