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【单选题】
下列关于异丙嗪的叙述,正确的是
A.
为冬眠合剂的组成成分之一
B.
为H2受体阻断药
C.
具有抗精神病作用
D.
镇静作用弱
E.
唾液分泌增加
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举一反三
【单选题】目前,我国采用的电视制式为( )。
A.
PAL 20帧/s
B.
PAL 25帧/s
C.
PAL 30帧/s
D.
NTSC 30帧/s
【单选题】Although it’s at ____ dusk, the children don’t get tired of playing ____ football outside.
A.
the; the
B.
/; /
C.
/; the
D.
the; /
【单选题】Children get tired of learning often because they _____ to do better than they can both at school and at home. [     ]
A.
hope
B.
are hoped
C.
expect
D.
are expected
【单选题】Children arc tired________ doing their homework. [     ]
A.
at
B.
in
C.
of .
D.
with
【单选题】Children are tired of learning often because they are __________ to do better than they can, both at school and at home.
A.
suggested
B.
expected
C.
hoped
D.
helped
【单选题】目前我国采用的电视制式为
A.
PAL 25帧/s
B.
NTSC 30帧/s
C.
PAL 20帧/s
D.
PAL 30帧/s
【单选题】_____ gets tired sometimes. [     ]
A.
People
B.
Men
C.
Everyone
D.
Children
【单选题】The children ________ tired.
A.
are
B.
were
【单选题】应将专利权授予( )
A.
先申请人
B.
先发明人
C.
先发现人
D.
使用人
【单选题】地下室刚性防水材料一般是()
A.
防水混凝土和防水砂浆
B.
防水混凝土和防水砂浆、卷材防潮层
C.
防水砂浆、卷材防潮层
D.
防水混凝土和卷材防潮层
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