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【多选题】
百合花药包括()。
A.
花粉囊
B.
药隔
C.
胚囊
D.
子房壁
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参考答案:
举一反三
【单选题】【B14】
A.
agreed
B.
shall agree
C.
agree
D.
have agreed
【单选题】He agreed ____ me ____ an early start, so he agreed ____ my proposal.
A.
with ,to , on
B.
to, with , on
C.
with, on, to
D.
on, to , with
【单选题】有一个量程为300V(即测量范围是0~30伏)的电压表,它的内阻是40kΩ,用它测量电压时,允许渡过的最大电流是()。
A.
7.5mA
B.
7.5A
C.
75mA
D.
75A
【简答题】Our family ______ not to exchange gifts this year. A) has agreed        B) have agreed   C) agrees        D) had agreed
【单选题】I ______ what he said. [     ]
A.
agreed with
B.
agreed to
C.
agreed on
D.
agreed at
【单选题】在外界条件不变的情况下,用同一仪表对被测量在仪表全部测量范围内进行正反行程(即被测参数逐渐由小到大和逐渐由大到小)测量时,被测量值正行程和反行程所得到的两条特性曲线之间的差值,称为
A.
变差
B.
反应时间
C.
灵敏度
D.
灵敏限
【简答题】有一只量程为 500V (即电压测量范围为 0-500V )的电压表,它的内阻为 40K Ω。用它测量电压时通过电压表的最大电流是多少?(提示:把电压表看成一个阻值较大的导体)
【单选题】Yesterday evening we had a lovely evening at ______.
A.
Peter and Helen’s
B.
Peter and Helens
C.
Peter and Helen
D.
Peter’s and Helen’s
【单选题】Peter had to wait two hour at the doctor's _____.
A.
surgery
B.
treatment
C.
changing room
D.
hall
【单选题】Peter had to wait two hours at the ____when he was ill.
A.
doctor's
B.
treatment
C.
changing room
D.
hall
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