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【单选题】
以下关于手足口病的好发年龄哪种说法正确A.
2岁以下
B.
3岁以下
C.
4岁以下
D.
5岁以下
E.
6岁以下
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举一反三
【单选题】The requirement of( ) especially as to hearing,eyesight and speech, should be met by the candidate before the training is commenced.
A.
medical fitness
B.
physical fitness
C.
intelligence quotient
D.
mental health
【简答题】Jamaica Agreement．(上海财经大学)
【单选题】The ship was _____ in a storm off Jamaica.
A.
drowned
B.
sunk
C.
wrecked
D.
submitted
【单选题】某工程现场采用出料容量500L的混凝土搅拌机，每一次循环中，装料、搅拌、卸料、中断需要的时问分别为1min、3min、1min、1min，机械正常功能利用系数为0.9，则该机械的台班产量为（ ）m3/台班。
A.
43.2
B.
270
C.
40
D.
36
【单选题】The ship was ______ in a storm off Jamaica.
A.
drowned
B.
immerged
C.
wrecked
D.
submitted
【单选题】Which is NOT the reason for Jamaica to become the birthplace of Reggae?
A.
The influence of blues and jazz in Caribbean areas.
B.
The use of English language.
C.
The influence of Jamaican folk music.
D.
The independence of Jamaica.
【单选题】浇筑某混凝土框架结构框架柱时，应在框架柱根部先浇（）
A.
5~10mm厚的水泥砂浆
B.
20~30mm厚的水泥砂浆
C.
50~100mm厚的与混凝土同成分水泥砂浆
D.
100~200mm厚比设计强度高一等级的混凝土
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