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				@@ -252,13 +252,15 @@ export default defineComponent({ 
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				             </NFormItem> 
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				           </NForm> 
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				         </div> 
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				-        <NButton 
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				-          class={styles.addBtn} 
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				-          disabled={state.upgradeFlag} 
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				-          type="primary" 
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				-          onClick={() => (state.addWorkVisible = true)}> 
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				-          布置作业 
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				-        </NButton> 
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				+        {!state.upgradeFlag && ( 
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				+          <NButton 
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				+            class={styles.addBtn} 
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				+            type="primary" 
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				+            onClick={() => (state.addWorkVisible = true)}> 
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				+            布置作业 
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				+          </NButton> 
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				+        )} 
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				+ 
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				         <div class={styles.tableWrap}> 
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				           <NDataTable 
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				             v-slots={{ 
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