皮皮学，免费搜题
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搜题
【多选题】
下列对中药黄芩叙述正确的是( )。A.
有效成分是黄芩苷
B.
易溶于水
C.
能与氯化锶生成沉淀
D.
不可用氧化铝色谱法分离
E.
易水解使药材外观呈绿色
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】测定煤的灰分时,需称一定量的空气干燥煤样,放人马弗炉或快速灰分测定仪中,以一定的速度加热到( )°C,灰化并灼烧到质量恒定,以残留物的质量占煤样质量的百分数作为灰分产率。
A.
815±20
B.
800±20
C.
800±10
D.
815±10
【单选题】测定煤的灰分时，需称一定量的空气干燥煤样，放人马弗炉或快速灰分测定仪中，以一定的速度加热到()℃，灰化并灼烧到质量恒定，以残留物的质量占煤样质量的百分数作为灰分产率。
A.
815±20
B.
800±20
C.
800±10
D.
815±10
【单选题】My bike needs _____. I think I need _____ to ask Uncle Wang for help. [ ]
A.
repairing; going
B.
repairing; to go
C.
to repair; going
D.
to repair; to go
【单选题】Something is wrong with my TV set. I would like to get it _____. [ ]
A.
to repair
B.
repaired
C.
repairing
D.
repair
【简答题】IELTS 8 Test 2 Section 1 精听2 • I need to take down a few (1) ____of the actual (2) ____over the phone before you put in a full (3) ____. Can you tell me how many (4) ____were damaged and what the dama...
【单选题】快速法测定煤的灰分时,需称一定量的空气干燥煤样,放人马弗炉或快速灰分测定仪中,以一定的速度加热到( )°C,灰化并灼烧到质量恒定,以残留物的质量占煤样质量的百分数作为灰分产率。
A.
815±20
B.
800±20
C.
800±10
D.
815±10
【单选题】I have to go to work by taxi because my car _____ at the garage. [ ]
A.
will be repaired
B.
is repaired
C.
is being repaired
D.
has been repaired
【单选题】— What's that noise? — Oh, I forgot to tell you. Your bike _____. [ ]
A.
was repaired
B.
will be repaired
C.
is being repaired
D.
has been repaired
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