（）是用来选择运行方向、转换为自动运行模式和编码手动运行模式。
A.主控制手柄
B.方式方向手柄
C.HMI
D.DDU
参考答案：B
妊娠8周末，胚胎各内脏器官的原基已形成，在此期应避免接触__________、_________等，以防胎儿畸形。
A domestic investor is purchasing foreign bonds. Which of the following statements regarding the exchange rate risk and price movement of the asset is most accurate（）
A. The depreciation of both the asset and the foreign currency benefits the domestic investor.
B. The appreciation of both the asset and the foreign currency benefits the domestic investor.
C. The appreciation of the asset and the depreciation of the foreign currency benefit the domestic investor.
