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【多选题】

以下防治枯萎病重要举措是()。

A.
降低病原
B.
切断传播
C.
环境改造
D.
提高抗性
E.
采用嫁接苗
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参考答案:
举一反三

【多选题】胡椒枯萎病在的传播途是( )

A.
带病种苗调运进行远距离传播。
B.
种子带毒传播。
C.
土壤传播
D.
地面流水传播
E.
农具传播
F.
割蔓传播

【单选题】防治“煤壁线”附近局部冒顶的措施不对的是( )。

A.
及时支护顶板
B.
严禁空顶作业
C.
严格执行敲帮问顶
D.
加大工作面端面距

【单选题】An elm in our backyard(7)the blight (枯萎病) this summer and dropped stone dead, leafless, almost overnight. One weekend(8)was a normal-looking elm, maybe a little bare in spots but(9)alarming, and the n...

A.
There are so many new books about dying that there are now special shelves set aside for them in bookshops, along with the health-diet and home-repair paperbacks. Some of them are so(1) with detailed information and step-by-step instructions for performing the function, that you’d think this was a new sort of(2)which all of us are now required to learn. The strongest impression the casual reader gets is that proper dying has become an extraordinary,(3)an exotic experience, something only the specially trained can do.
B.
(4), you could be led to believe that we are the only(5)capable of being aware of death, and that when the rest of nature is experiencing the life cycle and dying, one generation after(6), it is a different kind of process, done automatically and trivially, or more "natural", as we say.
相关题目:
【多选题】胡椒枯萎病在的传播途是( )
A.
带病种苗调运进行远距离传播。
B.
种子带毒传播。
C.
土壤传播
D.
地面流水传播
E.
农具传播
F.
割蔓传播
【单选题】防治“煤壁线”附近局部冒顶的措施不对的是( )。
A.
及时支护顶板
B.
严禁空顶作业
C.
严格执行敲帮问顶
D.
加大工作面端面距
【单选题】An elm in our backyard(7)the blight (枯萎病) this summer and dropped stone dead, leafless, almost overnight. One weekend(8)was a normal-looking elm, maybe a little bare in spots but(9)alarming, and the n...
A.
There are so many new books about dying that there are now special shelves set aside for them in bookshops, along with the health-diet and home-repair paperbacks. Some of them are so(1) with detailed information and step-by-step instructions for performing the function, that you’d think this was a new sort of(2)which all of us are now required to learn. The strongest impression the casual reader gets is that proper dying has become an extraordinary,(3)an exotic experience, something only the specially trained can do.
B.
(4), you could be led to believe that we are the only(5)capable of being aware of death, and that when the rest of nature is experiencing the life cycle and dying, one generation after(6), it is a different kind of process, done automatically and trivially, or more "natural", as we say.
【单选题】防治夜盲症的最佳食物是()
A.
苹果
B.
动物肝脏
C.
猪肉
D.
标准面粉
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