皮皮学,免费搜题
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【单选题】
目前诊断慢性镉中毒的肾脏损害早期改变的主要依据是
A.
尿β2-微球蛋白.视结合蛋白等低分子量蛋白排出增多
B.
尿肌酐
C.
尿中溶菌酶
D.
尿镉含量
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举一反三
【单选题】— I hear that Jack had a car accident yesterday. — I won't believe it. He ______.
A.
shouldn't have been so careless
B.
wouldn't be so careless
C.
couldn't be so careless
D.
mustn't be so careless
【单选题】He won't believe it____he sees it with his own eyes.
A.
after
B.
while
C.
until
【单选题】下列钢中,适于用来制造高速成形切削刃具(如车刀)的钢是
A.
9SiCr
B.
60Si2Mn
C.
Cr12MoV
D.
W18Cr4V
【单选题】He won't believe anything _________ he sees it with his own eyes.
A.
if
B.
as long as
C.
unless
D.
in case that
【简答题】根据句意及首字母或汉语提示完成单词。 1. I won't believe it until I see it with my o______ eyes. 2. My parents tell me not to c______ other's homework. It's bad for study. 3. Tom was really  l______ to get the singer st...
【判断题】摄入量的不足是导致维生素缺乏症的唯一原因。
A.
正确
B.
错误
【判断题】摄入量的不足是导致维生素缺乏症的唯一原因。
A.
正确
B.
错误
【单选题】高速钢螺纹车刀,容易磨得锋利,而且韧性较好,因而适用于()车削。
A.
低速
B.
高速
【判断题】明度对比是指色彩明暗程度的对比
A.
正确
B.
错误
【多选题】高速钢用于高速切削的刃具,如钻头、车刀,下列说法不正确的有()。
A.
适用于300℃高速切削的刃具
B.
适用于400℃高速切削的刃具
C.
适用于500℃高速切削的刃具
D.
适用于600℃高速切削的刃具
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