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航程越大，飞行则越远。现阶段飞机分为：（）、（）和（）三种航程！
根据实践经验，在粗磨的第一段磨矿时，通常采用（）形和（）形衬板。
Examine the following ALTER command： SQL> ALTER DISKGROUP dgroup1 UNDROP DISKS； What is the purpose of the command？（）
A. It cancels all pending disk drops within the disk group.
B. It restores disks that are being dropped as the result of a DROP DISKGROUP operation
C. It mounts disks in the disk group for which the drop-disk operation has already been co pleted
D. It restores all the dropped disks in the disk group for which the drop-disk operation has already been completed
E. It adds previously dropped disks back into the disk grou
内伤发热应慎用发散及苦寒泻热之品，其发散易耗气伤津，苦寒则易（）
A. 损伤中阳，化燥伤阴
B. 益气养血
C. 活血化瘀
D. 损伤脾胃
E. 疏肝理气
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