在【视图】工具条单击()按钮,可以调整工作视图的中心和比例以显示所有对象。
A. 平移
B. 放大/缩小
C. 缩放
D. 适合窗口
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2006年,《深圳经济特区()促进条例》出台,成为全国第一个保护改革的专项法规。
A. 改革
B. 改革开放
C. 改革创新
埋弧焊焊剂必须干燥,允许有少量其他参杂物。
A. 正确
B. 错误
Which of the following statements represents the advantage of rotary pumps as compared to reciprocating pumps?()
A. The high discharge pressure of the rotary pumps permits a larger volume of fluid per unit time than the reciprocating pump
B. Rotary pumps are capable of pumping more fluid than reciprocating pumps of the same weight
C. Rotary pumps occupy only one-half the space of reciprocating pumps
D. Rotary pumps eliminate discharge slippage of the pumped liquid, while this does not hold true for a reciprocating pum
荷兰EP氯霉素酶联免疫快速检测试剂盒生乳抽提法检测下限:0.01ug/kg,稀释倍数:()。
A. 0.1
B. 0.2
C. 0.5
D. 0.6