正确答案: C
5
题目:对于符合NSM规则要求的公司,主管机关将签发有效期不超过____年的《符合证明》。
解析:C
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举一反三的答案和解析:
[单选题]A diesel engine experiences a sudden loss in speed, accompanied by black exhaust smoke, with the fuel rack at maximum, and speed remaining below normal .the probable ___.
engine overload
[单选题]救生设备主要包括:
救生艇、救生筏、救生衣、救生圈
[单选题]腹部听诊是检查病人有无()
肠鸣音