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【单选题】
使用“复制”命令创建轴网时,选项栏中的什么命令,可以垂直复制轴网?A.
复制
B.
单个
C.
约束
D.
多个
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【多选题】下列关于哮喘急性发作时病情严重分级程度描述正确的是
A.
哮喘轻度急性发作时，患者呼吸频率轻度增加，散在哮鸣音，吸入支气管扩张剂后PEF占预计值或个人最佳值%<80%
B.
哮喘中度急性发作时，患者呼吸频率增加，哮鸣音响亮、弥散，吸入支气管扩张剂后PEF占预计值或个人最佳值%60～80%
C.
哮喘重度急性发作时，患者呼吸频率常>30次/min，哮鸣音响亮、弥散，吸入支气管扩张剂后PEF占预计值或个人最佳值%<60%
D.
哮喘危重急性发作时，哮鸣音减弱乃至听不到，PaO2<60mmHg，PaCO2>45mmHg，pH值降低
【单选题】The meeting has been cancelled. Ann _____ all that work. (TEM4-1995-55)
A.
need to do
B.
need have
C.
needn't have done
D.
needed not to do
【单选题】The meeting has been cancelled. Ann_____ all that work.
A.
need to do
B.
need have
C.
needn't have done
D.
need not to be
【单选题】The meeting has been cancelled. Ann ____ all that work .
A.
need to do
B.
need have
C.
needn't have done
D.
needed not to do
【单选题】The meeting has been cancelled. Ann__________ all that work.
A.
need to do
B.
need have
C.
needn ’ t have done
D.
needn ’ t not to do
【单选题】The meeting has been canceled. Ann _________ all that work.
A.
need to do
B.
need have
C.
needn't have done
D.
needed not to do
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