问题
单项选择题
初次申请拖拉机驾驶证或者申请增加准驾机型的申请人全部考试科目合格后，农机监理机构应当在日内核发拖拉机驾驶证。获准增加准驾机型的，应当收回原拖拉机驾驶证。（）
A.1
B.2
C.3
D.4
答案
参考答案：B
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初次申请拖拉机驾驶证或者申请增加准驾机型的申请人全部考试科目合格后，农机监理机构应当在日内核发拖拉机驾驶证。获准增加准驾机型的，应当收回原拖拉机驾驶证。（）
A.1
B.2
C.3
D.4
参考答案：B
| 35．Applications put computers to pratical business (1) , but below the (2) it’s the heart of an operating system—the kernel that provides the technical wizardry to juggle multiple program, connect to networks and store (3) . A traditional kernal provides all the functions for applications. The kemal (4) memory, I/O devices and parcels out processor time. The kernel also supports security and fault (5) , which is the ablity to recover automatically when parts of the system fail. |
(4)
A．understand
B．understands
C．understanding
D．understood