皮皮学，免费搜题
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搜题
【单选题】
苯二氮革类药物的作用机制是A.
抑制中枢神经细胞Cl- 通道，减少Cl- 细胞
B.
抑制中枢神经细胞Na+通道，减少Na+流入细胞
C.
影响中枢胆碱受体
D.
影响中枢多巴胺受体
E.
影响中枢γ-氨基丁酸受体
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】They’re late. The film _____ for 5 minutes.
A.
has begun
B.
has started
C.
has been on
D.
start
【单选题】They’re late. The film _______ for half an hour.
A.
Has begun
B.
has been on
C.
started
D.
has started
【单选题】They are late. The film __________ for five minutes.
A.
has begun
B.
has started
C.
has been on
D.
began
【单选题】If we ______ late, they ______ what has happened.
A.
are, will be wondering
B.
were; wondered
C.
will be late; will be wondering
D.
are; are wondering
【单选题】No one except two students ______ the meeting. a. has been late for b. have been late for c. was late for d. were later for
A.
has been late for
B.
have been late for
C.
was late for
D.
were late for
【多选题】气相色谱分析法在药品质量分析中的应用包括( )
A.
药材、饮片及制剂中部分农药残留量的检测
B.
中药材中二氧化硫含量测定
C.
酊剂（如藿香正气水、十滴水等）中甲醇、乙醇含量测定
D.
药品中有机溶剂残留量检测
【简答题】No one except two students _____ the meeting. [ ] a. has been late for b. have been late for c. was late for d. were later for
相关题目：
【单选题】They’re late. The film _____ for 5 minutes.
A.
has begun
B.
has started
C.
has been on
D.
start