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【单选题】
蜜炙药材时，蜜的用量一般是A.
10%
B.
15%
C.
20%
D.
25%
E.
30%
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反馈参考答案：
举一反三
【简答题】理想的安全评价分为 。
【简答题】命题p:三角形的内角和等于180 ,则
【简答题】命题 P :三角形的内角和等于 180 o ,则 非P:______________
【简答题】命题 p :三角形的内角和等于 180 o,则¬p:
【单选题】由主机重量引起的载荷和螺栓安装时引起的张紧力载荷均会使环氧垫片压缩环氧垫片的压缩量一般可考虑为垫片厚度的千分之()
A.
0.5
B.
1.0
C.
1.5
D.
2.0
【多选题】Which three IP multicast group concepts are true?（）
A.
If a packet is sent to a multicast group address, the multicast frame contains the source multicast address.
B.
A router does not have to be a member of a multicast group to receive multicast data.
C.
A router must be a member of a multicast group to send to the group.
D.
A router does not have to be a member of a multicast group to send to the group.
E.
If a packet is sent to a multicast group address, all members of the multicast group will rece ive it.
F.
A router must be a member of a multicast group to receive multicast data.
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