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【简答题】
已知函数是定义在R上的偶函数,已知x≥0时,f(x)=-x+1,则f(x)的解析式为______.
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皮皮学刷刷变学霸
举一反三
【单选题】胆总管和胰管汇合后,共同开口于
A.
十二指肠上部
B.
十二指肠降部
C.
十二指肠水平部
D.
十二指肠升部
【单选题】当某药物与其特异性的受体结合后能产生某种作用并引起一系列效应的药剂名称是
A.
非竞争性拮抗剂
B.
部分激动剂
C.
竞争性拮抗剂
D.
激动剂
E.
阻滞剂
【单选题】This country is fully committed to the introduction of computers into schools. This is demonstrated by the fact that virtually all 600 high schools and about one-third of the 1 600 elementary schools ...
A.
1 600
B.
600
C.
500
D.
1 000
【简答题】限速器上应当设有铭牌,标明()、()、()和()
【单选题】This country is one of the poorest in this region. Many people live in _______ poverty.
A.
moderate
B.
concrete
C.
desperate
D.
considerate
【判断题】因测量电流时有需断开电路将万用表表笔接入的麻烦,现在测量电流常用电流感应夹钳来或专用测电流的“钳表”来代替。
A.
正确
B.
错误
【单选题】产生竞争性拮抗作用的一对药物是
A.
阿托品与肾上腺素
B.
间羟胺与麻黄碱
C.
毛果芸香碱与阿托品
D.
阿托品与吗啡
E.
毛果芸香碱与去氧肾上腺素
【简答题】This country is______ as that one.A. half not so large B. not so large half C. not half so large D. not so half large
【单选题】This country is ( ) as that one.
A.
half not So large
B.
not so large half
C.
not half so large
D.
Not So half large
【单选题】This country is _____ as that one.
A.
half not so large
B.
not so large half
C.
not half so large
D.
not so half large
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