皮皮学,免费搜题
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【简答题】
100个初级精母细胞经过减数分裂后可形成( )个精子;100个初级卵母细胞经过减数分裂可形成( )卵细胞。(以动物为例)
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举一反三
【判断题】大多数食用菌和广泛栽培的食用菌主要是子囊菌。( )
A.
正确
B.
错误
【单选题】What does the man find out at last?
A.
Fifteen minutes is too long.
B.
The traffic is moving too slowly.
C.
He is not able to carry both bags.
【单选题】What does "traffic lights" mean?
A.
交通塔
B.
红绿灯
C.
交通堵塞
D.
交通拥挤
【简答题】古代土木工程的特征是什么?
【单选题】加油站工作区内的油气最高允许质量浓度为()。
A.
100mg/m³
B.
200mg/m³
C.
300mg/m³
D.
400mg/m³
【简答题】在三菱PLC中,X称为 。
【简答题】What does the traffic and transportation activity refer to?
【单选题】What does “traffic light” mean?
A.
交通
B.
交通堵塞
C.
交通信号灯,红绿灯
【单选题】工作区内的油气最高允许浓度为()mg/m3。
A.
(A)300
B.
(B)320
C.
(C)350
D.
(D)380
【单选题】What does the student suggest as a possible solution to the traffic problem?
A.
Tencouraging commuters to carpool during rush hour
B.
increasing fares on major city roads
C.
adding highway exit ramps before the Oakley Bridge
D.
giving free bus passes to students