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【多选题】
外汇交易基本方法包括

期权交易
投机交易
期货交易
保值交易
【单选题】
下列选项中属于实验室防护屏障第一道防护是()

生物安全柜
标准化操作程序
严格实验室管理
实验室实施结构
实验室通风系统
【单选题】
防护面罩/防护面屏使用注意事项中,说法错误是( )

【单选题】
阳光中紫外线照射到皮肤上可生成( )。

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Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:宋体; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;}维生素B1
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【单选题】
阳光中紫外线照射到皮肤上可生成( )

维生素A
.维生素B1
维生素C
.维生素D
【单选题】
阳光中紫外线照射到皮肤上可生成( )。

维生素A
维生素B1
维生素C
维生素D
【单选题】
阳光中紫外线照射到皮肤上可生成

维生素A
维生素B1
维生素C
维生素D
【单选题】
阳光中紫外线照射到皮肤上,可生成()

维生素A
维生素B
维生素C
维生素D
【多选题】
下列属于“风气动”病机 ( )

肝阳化风
阴虚动风
热极生风
血虚生风
风邪上扰
【判断题】
圆盘锯应设置防护罩、分料器、防护挡板等安全装置

正确
错误