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【单选题】
关于气雾剂表述正确的是A.
按医疗用途可分为吸入气雾剂、皮肤和黏膜气雾剂及空间消毒用气雾剂
B.
二相气雾剂一般为混悬系统或乳剂系统
C.
按气雾剂相组成可分为一相、二相和三相气雾剂
D.
吸入型气雾剂的微粒大小以在5～50 μm范围为宜
E.
气雾剂系指将药物封装于具有特制阀门系统的耐压密封容器中制成的制剂
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举一反三
【单选题】对于char ch1[20],ch2[20];strcmp(ch1,ch2);,说法正确的是( )。
A.
若ch1==ch2,则 strcmp(ch1,ch2)返回1
B.
若ch1==ch2,则 strcmp(ch1,ch2)返回0
C.
若ch1＞ch2,则 strcmp(ch1,ch2)返回1
D.
若chi＜ch2,则 strcmp(ch1,ch2)返回1
【单选题】We can infer from the passage that scientists are ______.
A.
writing reports
B.
observing what happened to San Francisco
C.
providing more information about the California Earthquake
D.
learning more about earthquakes
【单选题】It can be inferred from the passage that the Scots
A.
have been observing Mr. Cameron's movements.
B.
form. an unfavorable impression of Mr. Cameron.
C.
expect Mr. Cameron to uphold justice.
D.
doubt about Mr. Cameron's ability.
【单选题】There was no more wood so we watched the campfire burn _____.
A.
down
B.
off
C.
over
D.
out
【判断题】Much of our understanding of nature comes from observing the motion of objects.
A.
正确
B.
错误
【单选题】Brian thinks that a good strategy for dealing with problems is to
A.
react as soon as they happen.
B.
avoid discussing them with staff
C.
be prepared for them
【单选题】The best estimate of the wind direction at sea level can be obtained from observing the direction of the ______.
A.
cloud movement
B.
vessel heading
C.
waves
D.
swells
【简答题】the diversity in observing the initiative of change in companies
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