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【单选题】
启动定时器0开始计数的指令是使TCON的
A.
TF0 位置1
B.
TR0 位置1
C.
TR0 位置0
D.
TR1 位置0
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【单选题】—Where have you been ? I have been waiting here for half an hour. —I have been to that_____to buy a present for you.
A.
shoe shop
B.
shoes shop
C.
shoe shops
D.
shoes shops
【单选题】What are doing here? I ________ for you for ages!
A.
have been looked
B.
have been looking
C.
looked
D.
had been looking
【单选题】The Smiths _______ China for ten years , so they have been used to the life here.
A.
have been to  
B.
have gone to    
C.
have been in
【多选题】强调文学离不开世界、世界是文学之源的文论有( )。
A.
再现论
B.
柏拉图的否定性模仿论
C.
魔幻现实主义
D.
王国维“意境说”
E.
《尚书·尧典》的“诗言志”说
【单选题】在实验时为促使凝集现象的出现,下列措施无效的是
A.
离心
B.
增加电解质或蛋白质
C.
加入右旋糖酐或葡聚糖
D.
胰酶处理
E.
加入抗原
【单选题】Some of them______ here for three days.
A.
have arrived
B.
have got
C.
have reached
D.
have been
【简答题】The Smiths have been here for three hours(对 for three hours部分提问) ____ ____ have been here for three hours?
【单选题】—_______ have you been here? —I have been here for moths. [     ]
A.
How long
B.
How often
C.
How much
D.
How many
【单选题】在实验时为促使凝集现象的出现,下列措施无效的是
A.
离心
B.
增加电解质或蛋白质
C.
加入右旋糖苷或葡聚糖
D.
胰酶处理
E.
加入抗原
【单选题】四冲程柴油机和汽油机工作原理不同,以下说法错误的是()。
A.
柴油机吸气行程吸入的是纯空气
B.
压缩行程终了柴油机温度、压力比汽油机高
C.
两种发动机都是点火后做功
D.
两种发动机排气行程基本相同
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