问题
填空题
磁粉探伤，在外磁场去掉后，施加磁粉探伤的方法叫（）法。
答案
参考答案：剩磁法
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磁粉探伤，在外磁场去掉后，施加磁粉探伤的方法叫（）法。
参考答案：剩磁法
| 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．off
B．offer
C．office
D．officer